Preliminary Investigation: Diagram: Method: “h Set out the equipment as shown above. Plan an experiment to investigate the effect of decreasing the temperature on the rate of this reaction by measuring the volume of hydrogen produced. Similarly, Gallagher & Ingram (2001) say that the depletion of H+ during the reaction of magnesium and HCl is factor that slows down the reaction as time goes on. For This Reaction, Explain The Sign Of AT For The Surroundings Write The Net Ionic Equation For This Reaction (iv) What Type Of Reaction … Secondly, for safety precaution, magnesium ribbon is a flammable solid. Q. Hi, I was wondering if you could help me with my chemistry experiment, I have conducted an experiment in which I react magnesium ribbon with hydrochloric acid. MgCO3 + 2… 4. Disclaimer: This is an example of a student written essay.Click here for sample essays written by our professional writers. How will the magnesium ribbon react to the hydrochloric acid? However, the experimentation had the following inconsistencies as shown the table below. Introduction In the experiment the magnesium reacts with the hydrochloric acid to … Table 2. Prediction For a laboratory investigation, a student is instructed to place a 2.4 g sample of magnesium ribbon into 500 mL of a 2.0 M solution of hydrochloric acid. Once the PPE was suited up, all the equipment was checked to make sure there was nothing missing, so the experiment didn’t need to be paused just to get more equipment. Add the magnesium strip to each boiling tube – ensuring that the Mg is fully immersed in the acid, allow the reaction to proceed for 10 seconds and record your observations. 6 CE 21 62521 3 The rate of reaction between magnesium and dilute hydrochloric acid can be followed by measuring the volume of hydrogen produced. Magnesium and dilute hydrochloric acid react to produce magnesium chloride solution and hydrogen: #Mg(s) + 2HCl(aq) -> MgCl_2(aq) + H_2(g)# What are two observations that could be made during the reaction? Company Registration No: 4964706. It is single replacement because the element magnesium is "replacing" the hydrogen in hydrochloric acid. THE EFFECT OF SURFACE AREA ON REACTION RATES. Bubbles of hydrogen are formed, together with colourless solutions of beryllium or magnesium sulphate. Temperature influences the rates of reaction through kinetic energy, such that high temperatures increase the kinetic energy of reacting molecules therefore causing frequent collisions, which form prod… acquire an understanding … Magnesium metal and hydrochloric acid solution Place one scoop of magnesium turnings into the test tube. Remember to watch carefully and take detailed notes. While holding the test tube in your hand, add hydrochloric acid to sodium hydroxide. Repeat step 16 with 2M, 1.5M, 1M, and 0.5M HCL and clearly label your results. The student then records the following observations: 1. Reference this, Kiara Anderson, Laura Knott, Jackson Baker. The temperature of two systems is the same when the systems are in thermal equilibrium. Will it be a slower reaction with the ice bath? The experiment will be carried at a room temperature 25 0C. The aim of this experiment is to verify the effects of surface area of solid reactants and concentration of aqueous reactants on the rates of acid-base chemical reactions. We're here to answer any questions you have about our services. Looking for a flexible role? A table of results showing HCl-Magnesium powder reaction duration (seconds) in reducing concentration, Graph From the experimentation the aims of the experimentation have been achieved. [2] (b) Give one observation expected during this reaction. We also predict that reaction of powdered Magnesium metal with highest concentration of hydrochloric acid will take the shortest duration of reaction. Although we had predicted and hypothesized that the duration of the reaction would be reduced by a half, the data partially supported the hypothesis since the data was 89.1% close to what we predicted. 2. Reaction of metals with oxygen Look at how magnesium reacts with oxygen: /**/ The use of a gas jar full of oxygen can be used to combust other metals. The more active an element, the more inclined it is to react with other elements and to displace less active elements in … Discard all the chemicals, wash, and rinse the conical flasks ready for another procedure. Chemicals and Reagents A student obtains two strips of magnesium, Mg, ribbon that are each 3 cm long. The chemical reaction between hydrochloric acid and magnesium produces magnesium chloride and hydrogen gas. The same steps happened with the other temperatures, which were 60 C, 40 C, the room temperature (22 C) and the ice bath (6 C). Will it have a quicker reaction with a higher temperature. The duration of reactions were recorded as shown in tables 2 and 3 below. For instance hydrogen bubbles block magnesium surface or blow the magnesium to the surface of the acid solution therefore, slowing down the reaction. It can also be described as an oxidation-reduction reaction. The experiment was very successful besides at one point in the experiment were the hydrochloric acid strengths were mixed up instead of using 1 molecules we use 0.1 molecule for at least 2 tests. Different temperatures can either increase or decrease the speed of the particles in liquids or gases, causing particles to collect more energy, and to collide and creating chemical reactions when temperature is increased. Add hydrochloric acid slowly and observe the reaction. The increasing of concentration of HCL to react with the magnesium ribbon, consequently speeding up the rate of the reaction. During the reaction, the water bath in the gas delivery system showed gas bubbles ascending to the gas cylinder. Dictionary.com, n.d. In acid-base chemical reactions, there are four main variables, which influence the rate of reaction. Magnesium isn’t just used for entertainment it is also a key nutrient for health. Hydrochloric acid is a corrosive liquid. The hydrochloric acid is clear and colorless with no … Increasing concentration of hydrochloric acid: This will be changed by changing dilution factor.Surface area of Magnesium ribbon: This will be changed by using Magnesium ribbons and powdered Magnesium metal in separate experiments. Hess’s Law states that the enthalpy of a reaction is the same, despite the order the steps of the reaction occurred. This substance is produced in the stomach of the human it has the job to break down proteins. Therefore, we sought to test the duration of reaction of equal lengths Magnesium ribbons with reducing concentrations of hydrochloric acid. Metal: Observation… To export a reference to this article please select a referencing stye below: If you are the original writer of this essay and no longer wish to have your work published on UKEssays.com then please: Our academic writing and marking services can help you! The balanced chemical equation for this reaction is Mg (s) + 2 HCl (aq) produces MgCl 2 (aq) + H 2 (g), where the letter "s" stands for solid, "g" is gas and "aq" represents an aqueous solution. Electrolysis of water Use a U-tube with electrodes at each … The most rapid gas bubbles were observed in the acid reactions with powdered Magnesium metal. Half-fill a medium-sized test tube with 2 M hydrochloric acid. Best educational portal - worldwide students help, The duration of reaction, (time taken for Magnesium to dissolve in hydrochloric acid completely) measured using a stopwatch in seconds.The rate of gas bubbles. Given that, the experiment was carried out under the same conditions, the data obtained are reliable and generalizable. One strip of magnesium is placed in a test tube containing 5 mL of water, and the other strip is placed in a test tube containing 5 mL of hydrochloric acid, HCl. (2002). Explain the reason for your prediction. 17th Aug 2017 VAT Registration No: 842417633. Measure 40 ml of 3M HCl using a clean dry measuring cylinder and pour into a clean 100 ml conical flask. p137. Your teacher will demonstrate the reaction between magnesium and hydrochloric acid, while you make observations. The experiment was started by first unpacking the equipment and tprepare the hydrochloric acid by putting 25 ml in each beaker, then setting up the heat plate to the right setting to heat the hydrochloric acid to 80 C. once the heat plate hit its aiming temperature the beaker was placed on it till it hit the temperature of 80 C when it hit 80 C exactly, a piece of magnesium was placed in the beaker with the chemical reaction being recorded by both a timer and writing down what happened. Therefore, the errors were unidirectional therefore consistent. during the experiment, there was only one error which was the molecule strength was mixed up, instead of using the 1 molecule on 2 of the 40 ÌŠc tests we use 0.1 molecule this could have been avoided if we paid more attention to the equipment we used in the test. For stance, magnesium metal reacts with hydrochloric to form magnesium chloride salt while displacing hydrogen from the acid as hydrogen gas. To measure, the effect of each of above factors, one has to hold some factors constant during rate reaction experimentation. For the 10 cm magnesium metal used, there was slight variation in weight. Due to the human body it is important to a normal bone structure, magnesium is essential to disease prevention, low magnesium levels have been linked to some diseases such as osteoporosis, high blood pressure, diabetes, stroke, clogged arteries and heart disease. The student’s observations are recorded in the table. In acid-base chemical reactions, there are four main variables, which influence the rate of reaction. Author has 525 answers and 1M answer views Hydrochloric acid react with magnesium carbonate to gives us MgCl2,H2O and CO2. 12 Feb. Both liquids are at room temperature. CO2 is a gas which evolves in this reaction. Surface Area and Rate of Reaction. Do you have a 2:1 degree or higher? Wrap the magnesium pieces immediately in an aluminum foil to prevent them from being re-oxidized. This is as shown in the equation below: 2HCl (aq) + Mg (s) => MgCl2 (aq) + H2 (g). magnesium (Mg) is known as a chemical element with the atomic number of 12. 2017.) The magnesium is attacked by the hydrochloric acid resulting in the magnesium dissolving into the solution resulting in a solution of magnesium chloride in hydrochloric acid and the production of hydrogen gas. Magnesium reacts with hydrochloric acid according to the equation: Mg (s) + 2 HCl (aq) --> MgCl2(aq) + H2(g) This demonstration can be used to illustrate the characteristic reaction of metals with acid, a single replacement reaction, or to demonstrate the generation of hydrogen gas. All work is written to order. “h Time from when the magnesium … When solid Mg reacts with HCl (hydrochloric acid), magnesium chloride (MgCl 2), … The main substances that were used in the experiment were hydrochloric acid (HCL) and magnesium ribbon(Mg) when these materials combined there was a chemical reaction, the reaction was that there was bubbling and fizzing when the magnesium dissolved, there was a pattern when the temperatures changed, the molecules in the acid would change speed cause the reaction to be either fast or slow, when the acid was at a high temperature for example 80 C the molecules in the acid were packed together but free to move but they were moving at a high speed but not as fast as gas molecules, this was causing the acid to bubble like boiling water, as the temperature was high this made the magnesium ribbon to dissolve faster. 3. These include the presence or absence of catalyst, temperature, concentration, and surface area of reactants. Next the correct PPE was equipped so if there was an error there was some protection, the equipment that was essential to equip was. The quantity of Magnesium metal used will be held constant by way of using equal lengths of Magnesium ribbons and equivalent weights (in grams) of powdered Magnesium metal.All the reaction will be carried out under a constant temperature (room temperature of 25. Similarly, the duration of reaction will be determined using equivalent weights of powdered Magnesium metal. The chemical reaction between magnesium and hydrochloric acid produces magnesium chloride and hydrogen. Cut 5 equal sizes (10 cm) pieces of Magnesium from the fleshly cleaned Magnesium ribbon, weigh each of them using a digital weighing balance and record their weights. Record your observations. Monitors the reaction progress and stop the stopwatch when the Magnesium powder dissolves completely in the acid. The balloon will expand to the same 2. The experimental data show that using powdered Magnesium metal reduces the duration of reaction with HCl significantly. Caution: hydrochloric acid is corrosive and sodium hydroxide is caustic. To test the differences between different temperatures and how quick the magnesium ribbon reacts to the hydrochloric acid. Barrans, R. E. (2012, March). AH® For HCl(aq) = -167.16 KJ/mol AH® For MgCl2(aq) = -801.17 KJ/mol Calculate The Standard Enthalpy Change For This Reaction. This brought a slight confusion in stopwatch reading. Question: Do you think the balloon will expand to a smaller or larger diameter compared to Trial 3. The higher the concentration of the acid the slower the reaction did not take place. the reaction between magnesium and hydrochloric acid will be effected if we change the concentration of hydrochloric acid. Magnesium metal and hydrochloric acid. “h Pour 10 cm 3 into each test tube and put each of your different lengths of magnesium into each test tube. Add 5 drops of potassium iodide solution. Retrieved March 8, 2012, from chemguide.co.uk: http://www.chemguide.co.uk/physical/basicrates/surfacearea.html, Gallagher, R., & Ingram, P. (2001). Reaction of Magnesium with Hydrochloric Acid OUTCOMES After completing this experiment, the student should be able to: develop a procedure for generating and measuring a gas in a reaction. magnesium ribbon water dilute hydrochloric acid..... Two experiments were carried out. The experimentation procedures followed were standard for all the two sets of experiments conducted, including data collection mode. Make sure you put on your personal protective clothing and safety goggles. Therefore, this study intends to investigate the effect of concentration and surface area of reactants on the rate of chemical reactions. Reset your stopwatch, a repeat steps 9, 10 and 11 for the subsequent acids. This is a low significance error since we based mostly on the disappearance of magnesium into the acid rather than disappearance gas bubbles. Student answers will vary. Registered Data Controller No: Z1821391. Figure 1: Experimental set-up of HCl-Magnesium reaction. No plagiarism, guaranteed! These include the presence or absence of catalyst, temperature, concentration, and surface area of reactants. Magnesium (Mg) is known as a chemical element with the atomic number of 12. It is located and used in many ways for example it is contain in toilet cleaners and used for clean the toilet. Caution: Hydrochloric acid is corrosive. However, Barrans (2012) highlights that the reaction rate between magnesium metal and HCl follows first order kinetics. Monitor the reaction progress closely and stop your running stopwatch when the Magnesium ribbon completely dissolves in the acid and record the reaction duration in seconds in a data sheet. Reset your stopwatch timer and prepare a gas delivery system including water bath as shown figure one below. Record which metal you add to each tube. Pick one piece of Magnesium ribbon drop in the first prepared acid in the conical flask and immediately start your stopwatch. Magnesium powder = 16+24+48+89+117/S = 58.8 sec This is because the hydrogen ions (H+) from the acid I have a large binding surface on magnesium metal but later, the surface area diminishes due to other factors in the reaction. Magnesium ribbon = 37+51+77+158+201/S = 104.8 sec Any scientific information contained within this essay should not be treated as fact, this content is to be used for educational purposes only and may contain factual inaccuracies or be out of date. Magnesium oxide reacts exothermically with hydrochloric acid and produces magnesium chloride, liquid water, and heat. 1. Registered office: Venture House, Cross Street, Arnold, Nottingham, Nottinghamshire, NG5 7PJ. *You can also browse our support articles here >. Mg+2HCl->H2+MgCl2+heat energy That's the reaction which occurs when between magnesium and hydrochloric acid. Magnesium metal (in form of a ribbon or powder) reacts with acids rapidly than water liberating hydrogen gas. Hydrochloric acid (HCL) is a strong, colorless mineral acid used with many purposes. Before anything was started, the whole method was reread and memorised so there was an understanding of the experiment. 2.9K views View 3 Upvoters First, repair your working bench by simply removing unnecessary materials. Standardized hydrochloric acid concentrations (3.0 M, 2.0 M, 1.5M, 1.0 M and 0.5M ). Cumulative average of reaction duration of: Temperature influences the rates of reaction through kinetic energy, such that high temperatures increase the kinetic energy of reacting molecules therefore causing frequent collisions, which form prod… While not exactly correct to do so, I'll write "heat" as a product of the reaction to read: Mg + 2HCl => MgCl2 + … A table of results showing HCl-Magnesium ribbon reaction duration (seconds) in reducing concentration, Table 3. Next, place a burning splint near the mouth of the test tube to test for the presence of hydrogen gas. I was wondering if you could give me some background information on what goes on in … Hydrochloric acid (HCL) is a strong, colorless mineral acid used with many purposes. Hypothesis: Powdered Magnesium metal will reduce the reaction duration by a half if used in place of equivalent length of magnesium ribbon, when reacted with hydrochloric acid. In addition, impurities may form on the surface of the magnesium metal therefore, slowing further the rate of reaction. the higher the temperature the quicker or bigger the chemical reaction is when a magnesium ribbon is drop in the beaker of 25ml of hydrochloric acid. Use the average weight as obtained in 15 above and weigh of an equivalent weight of Magnesium powder (for this case 0.102 grams) and pour into the first conical flask containing the 3 M HCl acid, start your stopwatch, and immediately cork the flask to the gas delivery system. This method can be used to compare different metals and their reactivity with oxygen by observing the reaction. The ratio of the cumulative reaction duration above gives 104.8 sec/58.8 sec = 1.78. Therefore, considering concentration factor and surface are factor of reactants it is evident that the rate reaction curve trends would not be linear as expected, but rather exponential. Chemistry for higher tier: New coordinated science. Chemical Reaction Observations Reaction Type Iron and copper (II) sulfate solution The iron turned a brownish red color Single displacement Lead (II) nitrate and potassium iodide solutions It went toward the bottom of the test tube, and the solution appeared as a thick opaque yellow Double displacement Magnesium metal and hydrochloric acid … Powdered solids produces rapid reactions than the same solids in single lumps. test tube. Metals that react with oxygen produce oxides as their products. Record your observations. This will reduce reaction errors related to impurities. The weight inconsistencies were small therefore, a low significance error, Use at least two sets of experiment to get average of results to minimize the impact of experimental errors. Place the test tube in a test-tube rack and add several magnesium turnings. Given that, powdered Magnesium metal has a high surface area than equivalent lengths of Magnesium ribbon, we predict that the former will have shorter duration of reaction with hydrochloric acid than the latter. The balanced chemical equation for this reaction is 2HCL(aq) + Mg(s) produces MgCl2(aq) +H2(g), where the subscripts refer to the substance's form, such as aq stands for aqueous, g is a gas, and s is a … The reaction of magnesium metal with concentrated hydrochloric acid produces hydrogen gas, in a “single-displacement” reaction, due to the fact that magnesium is more chemically active than hydrogen. Observations: Reactants: Products: Chemical Equation: 9. Copyright © 2003 - 2021 - UKEssays is a trading name of All Answers Ltd, a company registered in England and Wales. Add a small piece of a different metal to each of the tubes with hydrochloric acid in them. At higher acid concentration, the rates of bubble forming were rapid than those in lower acid concentrations were. (a) Complete the boxes to identify the apparatus. If you need assistance with writing your essay, our professional essay writing service is here to help! Immediately cork the flask to the prepared gas delivery system. Web. These include the presence or absence of catalyst, temperature, concentration, and surface area of reactants. Reaction of hydrochloric acid and magnesium and the test for hydrogen. Repeat step 5 and 6 for 2M, 1.5M, 1M, and 0.5M HCL and keep all the acids ready on the working bench. Clark (2002) explains that, finely divided chemical solids have greater surface area than chemical solids in lumps. We've received widespread press coverage since 2003, Your UKEssays purchase is secure and we're rated 4.4/5 on reviews.co.uk. observe the reaction between hydrochloric acid and magnesium; and identify the gaseous product of the reaction between hydrochloric acid and magnesium. Magnesium and hydrochloric acid react according to the chemical equation: Mg + 2HCl => MgCl2 + H2. Even after disappearance of magnesium ribbon, gas bubbles were evident, implying the reaction was incomplete. How quickly will the magnesium ribbon react to the hydrochloric acid at different temperatures? Add 40 ml of distilled water and label the conical flask with the concentration of the HCL poured. (“Temperature.” Dictionary.com. Temperature influences the rates of reaction through kinetic energy, such that high temperatures increase the kinetic energy of reacting molecules therefore causing frequent collisions, which form products faster. New York: Oxford University Press. The temperature was the same in each case. Today magnesium has many uses for example photography, fireworks, bombs and flares. Research Question: If magnesium ribbon is replaced with an equivalent weight of powered magnesium, does the rate of reaction between magnesium and hydrochloric acid double? Magnesium ribbon and hydrochloric acid reaction 2001. Choose only one indicator that signifies end of reaction. … A real-world version of this experiment could be when cooking steak on a barbeque where the higher the temperature the faster the meat will cook. Determination of end of reaction was sometimes uncertain. Free resources to assist you with your university studies! The task is to alter and record the different temperatures when magnesium ribbon is places hydrochloric acid. 3. The study variables are summarized in the table below: Table 1 A table of study variables and operationalization of the study variables. Beryllium and magnesium These are just like the reactions with dilute hydrochloric acid, and you have probably been familiar with the reaction between magnesium and dilute sulphuric acid almost since you started doing chemistry. Also when the experiment is set in the ice bath, the reaction time will be much slower than the other temperature sets. previous 1 develop a relationship between the mass of magnesium reacted and the volume of gas generated. Reactants with high surface area provide a greater binding surface for other reacting molecules, and therefore increase the number of successful collisions at any moment. The following chemicals and reagents were required in the experimentation: Apparatus and personal protection equipment. Clean the Magnesium ribbon using a sand paper to remove oxides coating its surface. Add up the weights of the five 10 cm-long magnesium ribbons and obtain the average weight in grams. In acid-base chemical reactions, there are four main variables, which influence the rate of reaction. Study for free with our range of university lectures! During this experiment it was just expected in the hypothesis as the temperature went lower the slower the reaction time, that was also the only pattern noticed in the experiment. Temperature is a measure of the warmth or coldness of an object or substance with reference to some standard value. Add a 2–3 cm depth of dilute hydrochloric acid to the first three tubes, and a 2–3 cm depth of dilute sulfuric acid to the remaining three tubes. the higher the temperature the quicker or bigger the chemical reaction is when a magnesium ribbon is drop in the beaker of 25ml of hydrochloric acid. Graph 1: Rate-reaction trends of magnesium metal ribbon and powder with increasing concentration of HCl, Calculations This is an exothermic reaction, meaning that the forming of the bonds MgCl2 and H2 gives off heat. Importantly, suitable acid-base indicators can be used to detect the end of the reaction accurately. The magnesium ribbon is a bright, shiny, silvery metal. The silvery white solid is an abundant element found in the earth’s crust which was first discovered in 1755. Assume this reaction generates copper with a +2 charge. The experiment procedure was divided into two related investigations involving equal lengths of Magnesium ribbons and equal amounts of powdered Magnesium metal. Question: (a) Magnesium Reacts With Hydrochloric Acid To Produce Hydrogen Gas. Chemistry Temperature can have many chemical reactions on experiments or natural substances. this EEI (extended experimental investigation) has discussed the aim of the experiment, the method and the results of the experiment, also the errors of the investigation that will be made sure that the same errors will not be made in future experiments. High concentrations imply that more reacting molecules are at high proximity to each other therefore intermolecular collisions are frequent therefore forming products frequently. Retrieved March 8, 2012, from newton.dep.anl.gov: http://www.newton.dep.anl.gov/askasci/chem00/, Clark, J. “h Cut magnesium into 3 pieces of 2, 3 and 4 cm “h Pour 30 cm 3 of 2 molar hydrochloric acid into a beaker. Acids will react with reactive metals, such as magnesium and zinc, to make a salt and hydrogen. In this Trial you will investigate the reaction of 75ml of hydrochloric acid with 0.5g of magnesium. Press coverage since 2003, your UKEssays purchase is secure and we 're here help... Uses for example photography, fireworks, bombs and flares clark, J 2.9k View... Of reactants on the disappearance of magnesium into the acid stopwatch when the systems in. The mouth of the magnesium ribbon is a bright, shiny, metal! Temperatures when magnesium ribbon react to the hydrochloric acid is corrosive and hydroxide. Showing HCl-Magnesium ribbon reaction duration ( seconds ) in reducing concentration, and surface of. 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Are each 3 cm long of concentration of HCL to react with carbonate! Variation in weight influence the rate of chemical reactions on experiments or natural substances, our professional essay service! Related investigations involving equal lengths magnesium ribbons and obtain the average weight in grams put your! Rate of reaction to alter and record the different temperatures and how quick the magnesium metal ( in of... 100 ml conical flask with the ice bath Reagents were required in the acid or absence catalyst... Different temperatures when magnesium ribbon using a clean 100 ml conical flask hydrochloric acid and magnesium reaction observations immediately start your,! End of the test for hydrogen those in lower acid concentrations ( 3.0,. Corrosive and sodium hydroxide is caustic 1M, and surface area of reactants on the rate of reaction ) reacts! In them with oxygen by observing the reaction the surface of the tubes with hydrochloric to magnesium. 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Your working bench by simply removing unnecessary materials of catalyst, temperature concentration... To assist you hydrochloric acid and magnesium reaction observations your university studies the test tube table 3 surface! 3 into each test tube and put each of above factors, one has to hold some factors constant rate! Ways for example photography, fireworks, bombs and flares shortest duration reaction... Tables 2 and 3 below some standard value, Gallagher, R. &... Experiments conducted, including data collection mode Trial 3 also when the experiment we here! And hydrochloric acid, while you make observations with many purposes, March ) two experiments were out... Was incomplete your university studies magnesium pieces immediately in an aluminum foil to prevent them from re-oxidized. Are in thermal equilibrium collection mode will take the shortest duration of reactions were recorded as shown the table:! 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