Stoichiometry Worksheet - Central Bucks School District

StoichiometryWorksheet

1.Na2SIO3(s)+8HF(aq)H2SiF6(aq)+2NaF(aq)+3H2O(l) a.HowmanymolesofHFareneededtoreactwith0.300molofNa2SiO3? b.HowmanygramsofNaFformwhen0.500molofHFreactswithexcessNa2SiO3? c.HowmanygramsofNa2SiO3canreactwith0.800gofHF? 2.C6H12O6(aq)2C2H5OH(aq)+2CO2(g) a.HowmanymolesofCO2areproducedwhen0.400molofC6H12O6reactsinthis fashion? b.HowmanygramsofC6H12O6areneededtoform7.50gofC2H5OH? c.HowmanygramsofCO2formwhen7.50gofC2H5OHareproduced? 3.Fe2O3(s)+CO(g)Fe(s)+CO2(g)(unbalanced!) a.CalculatethenumberofgramsofCOthatcanreactwith0.150kgofFe2O3

 b.CalculatethenumberofgramsofFeandthenumberofgramsofCO2formed when0.150kgofFe2O3reacts 4.2NaOH(s)+CO2(g)Na2CO3(s)+H2O(l) a.Whichreagentisthelimitingreactantwhen1.85molNaOHand1.00molCO2are allowedtoreact? b.HowmanymolesofNa2CO3canbeproduced? 5.C6H6+Br2C6H5Br+HBr a.WhatisthetheoreticalyieldofC6H5Brinthisreactionwhen30.0gofC6H6reacts with65.0gorBr2? b.IftheactualyieldofC6H5Brwas56.7g,whatisthepercentyield?

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