Carbonates postlab (revised).pdf - CHEM& 121Tacoma...

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CHEM& 121Tacoma Community CollegePost-lab CarbonatesEach student will submit her/his own post-lab assignment.I encouragestudents to talk to each other when working on the post-lab.But each studentmust generate her/his own tables, graphs, and answer written questions inher/his own words. Please complete your lab report in a Microsoft Worddocument by answering the questions listed below.You do not have to retypethe questions in your report.You can highlight or change the font color foryour answersPart II.Sodium Carbonate – Na2CO1.Report data for the following:Mass in GramsMass of Na2CO3before adding HCl0.295 gMass of product after drying0.297 g2.Write and balance the chemical equation (“chemical reaction”) that depicts solid sodiumcarbonate reacting with aqueous hydrochloric acid solution to form aqueous sodium chloride,liquid water, and gaseous carbon dioxide.Be sure to include subscripts as needed andprovide physical states. Na2CO3 (s) + 2 HCl(aq) -----> 2 NaCl(aq) + H2O(l) + CO2(g)3.Using the mass of Na2CO3that you weighed out calculate thetheoreticalyield of NaCl ingrams.Show your work!Note: This is asking about the theoretical yield, not the actualyield.Things to consider when working through this problemShow your work!:a.Calculate the molar mass of Na2CO33
c.Using the molar ratios (stoichiometric coefficients) between Na2CO3and NaCl inthe balanced chemical equation above determine the number of moles of NaCl1

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Term
Spring
Professor
N/A
Tags
Stoichiometry, Sodium, Chemical reaction, Sodium chloride, 121Tacoma Community College

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