Hydrochloric acid is a strong acid. 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. Measure 40 ml of 3M HCl using a clean dry measuring cylinder and pour into a clean 100 ml conical flask. To measure, the effect of each of above factors, one has to hold some factors constant during rate reaction experimentation. An audible crackling sound is heard as the hydrogen burns. The flammability of hydrogen gas can be demonstrated by carefully holding a match or fireplace lighter up to the popping hydrogen bubbles. A table of results showing HCl-Magnesium ribbon reaction duration (seconds) in reducing concentration, Table 3. Acasestudy.com © 2007-2019 All rights reserved. Clark, J. Monitors the reaction progress and stop the stopwatch when the Magnesium powder dissolves completely in the acid. It is not currently accepting answers. The magnesium reacts with the acid, producing visible bubbles of hydrogen gas. A small piece of magnesium ribbon is placed in a Petri dish containing 1M hydrochloric acid. High concentrations imply that more reacting molecules are at high proximity to each o… In acid-base chemical reactions, there are four main variables, which influence the rate of reaction. These include the presence or absence of catalyst, temperature, concentration, and surface area of reactants. 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. The most rapid gas bubbles were observed in the acid reactions with powdered Magnesium metal. Discard all the chemicals, wash, and rinse the conical flasks ready for another procedure. Immediately cork the flask to the prepared gas delivery system. This is a low significance error since we based mostly on the disappearance of magnesium into the acid rather than disappearance gas bubbles. Would you like to get a custom case study? A table of results showing HCl-Magnesium powder reaction duration (seconds) in reducing concentration. For stance, magnesium metal reacts with hydrochloric to form magnesium chloride salt while displacing hydrogen from the acid as hydrogen gas. The flammability of hydrogen gas can be demonstrated by carefully holding a match or fireplace lighter up to the popping hydrogen bubbles. Reaction between magnesium and hydrochloric acid [closed] Ask Question Asked 3 years, 11 months ago. Even after disappearance of magnesium ribbon, gas bubbles were evident, implying the reaction was incomplete. 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. A computer simulation is available to compliment and enhance this demonstration. First, repair your working bench by simply removing unnecessary materials. 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. Make sure you put on your personal protective clothing and safety goggles. Students observe bubbles of hydrogen gas forming. Add 40 ml of distilled water and label the conical flask with the concentration of the HCL poured. Welcome to the world of case studies that can bring you high grades! p137. Similarly, the duration of reaction will be determined using equivalent weights of powdered Magnesium metal. 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. The university expressly disclaims all warranties, including the warranties of merchantability, fitness for a particular purpose and non-infringement. At higher acid concentration, the rates of bubble forming were rapid than those in lower acid concentrations were. The experiment will be carried at a room temperature 25 0C. Choose only one indicator that signifies end of reaction. Randy Sullivan, University of Oregon The reactants are magnesium and hydrochloric acid. Hydrochloric acid is a corrosive liquid. Reset your stopwatch, a repeat steps 9, 10 and 11 for the subsequent acids. (2002). Pick one piece of Magnesium ribbon drop in the first prepared acid in the conical flask and immediately start your stopwatch. Magnesium metal is an active metal. For a large audience presentation, this demonstration should be viewed via a camera or document camera. Keep flammables and open flame away from the vicinity of the demo. © Copyright 2012 Email: Here, at ACaseStudy.com, we deliver professionally written papers, and the best grades for you from your professors are guaranteed! Retrieved March 8, 2012, from chemguide.co.uk: http://www.chemguide.co.uk/physical/basicrates/surfacearea. New York: Oxford University Press. Hydrochloric acid (Concentrated, 12 M) Magnesium ribbon . 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. Magnesium ribbon is a flammable solid. How about receiving a customized one? We also predict that reaction of powdered Magnesium metal with highest concentration of hydrochloric acid will take the shortest duration of reaction.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. One day of lead time is required for this project. 1. Repeat step 5 and 6 for 2M, 1.5M, 1M, and 0.5M HCL and keep all the acids ready on the working bench. Net Ionic Equation for Mg + HCl (Magnesium + Hydrochloric acid) The balanced chemical equation is: Mg_((s))+ 2HCl_((aq))rarrMgCl_(2(aq)) + H_(2(g) The reaction between magnesium and hydrochloric acid combine to form a salt of magnesium chloride and release hydrogen gas. Please wear your safety goggles at all times while anyone is working with chemicals or equipment. Active 3 years, 11 months ago. [email protected] 804-506-0782 350 5th Ave, New York, NY 10118, USA. THE EFFECT OF SURFACE AREA ON REACTION RATES. 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