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Lab-Rate of Chemical Reactions-student guide.docx - Lab:...

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Pre-Lab InformationPurposeExplore the effects of variables on the rate of chemical reactions.
QuestionHow do the factors of temperature and surface area affect the rate of chemical reactions?
VariablesIndependent Variable #1: Temperature of the waterIndependent Variable #2:Surface area of the sodium bicarbonateDependent Variable:Time to dissolve sodium bicarbonateSummaryYou will establish a baseline for comparison by adding a tablet of sodium bicarbonate toroom temperature water and recording the amount of time necessary for it to completelydissolve. You will then repeat the procedure in one series of trials in which you usedifferent temperatures and another series of trials in which you manipulate the availablesurface area of the tablets. Each time, you will record the time it takes for the sodiumbicarbonate to dissolve and compare it to your baseline.Safety1.Wear appropriate clothing for working in the lab, including a lab coat or apron.2.Wear protective gloves when handling chemicals and wash your hands thoroughly when theexperiment is complete.3.Protect your eyes by wearing safety goggles throughout the experiment.4.Inspect glassware prior to starting your experiment. Check for chips, cracks, or other safetyconcerns.5.Behave in a way that is purposeful.6.Report all accidents – no matter how big or small – to your teacher.Lab Procedure1.Gather Materials1.one 400 mL beaker2.15 sodiumbicarbonate tablets3.water4.stir rod5.graduated cylinder6.thermometer7.stopwatch8.spatula9.mortar and pestle2.Establish Baseline for Comparison (Room Temperature Water)1.Use a graduated cylinder to add 250 mL of room temperature water to a beaker.2.Stir the water with a stir rod to make sure it is the same temperature throughout the beaker.

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Term
Spring
Professor
N/A
Tags
Chemical reaction, sodium bicarbonate, Cold Water

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