answers
AMsolutionMofMaqueousMcopperMchlorideMisMelectrolysed.MThisMproducesMchlorineMgasMa
ndMsolidMcopper.MStateMtheMelectrodeMatMwhichMyouMwouldMexpectMtoMfindMsolidMco
pper.M(1)M-MAnswerM-TheMcathode.
ExplainMwhyMtheMelectrodesMusedMinMelectrolysisMareMtypicallyMinert.M(1)M-MAnswerM-
SoMthatMtheyMdoMnotMreactMwithMtheMelectrolyte.
GiveMtheMhalfMequationsMforMtheMproductionMofMsolidMcopperMandMchlorineMgasMinMt
heMelectrolysisMofMcopperMchloride.M(2)M-MAnswerM-Cu(aq)2++2e−→Cu(s)
-2Cl(aq)−→Cl2(g)+2e−2Cl(aq)−→Cl2(g)+2e−
WhenMisMelectrolysisMusedMtoMextractMmetals?M(2)M-MAnswerM-
ifMtheMmetalMisMtooMreactiveMtoMbeMextractedMwithMbyMreductionMwithMcarbonM
-MorMifMtheMmetalMreactsMwithMcarbon
IfMtheMmetalMisMmoreMreactiveMthanMhydrogen,MwhatMisMproducedMatMtheMnegativeMe
lectrode?M-MAnswerMhydrogen
WhatMhappensMtoMtheMconcentrationMofMtheMsulphuricMacidMasMtheMelectricityMisMpass
edMthroughMit?MExplainMyourManswer.M(3)M-MAnswerM-concentrationMincreasesM
-MOH-MdischargedMfromMwaterM/MwaterMdecomposesM
-MH+MconcentrationMincreasesM/MH2MandMO2Mevolved
ExplainMwhyMchlorineMgasMformsMatMtheMpositiveMelectrode.M(2)M-MAnswerM-
chlorideMionsMareMnegative;M
-negativeMionsMmoveMtoMpositiveMelectrode
ChlorineMisMproducedMatMtheMpositiveMelectrode.MDescribeMandMgiveMtheMresultMofMa
MchemicalMtestMtoMproveMthatMtheMgasMisMchlorine.M(2)M-MAnswerM-
litmusMpaperM/MUniversalMIndicatorMpaperM/MpHMpape
-bleachedM/MturnsMwhiteMorMlosesMitsMcolour