EDEXCEL IGCSE CHEMISTRY EQUATIONS
AND ANSWERS
Equation clinking cmoles, cconcentration cand cvolume c- cCORRECT✅✅moles c=
cconcentration cx cvolume
Equation clinking cmass, cmoles cand crelative cformula cmass c- cCORRECT✅✅mass c=
cmoles cx cMr
Percentage cyield c- cCORRECT✅✅(actual cyield/theoretical cyield) cx c100
Relative catomic cmass c- cCORRECT✅✅(atomic cmass cof cisotope c1 cx cabundance)
c+ c(atomic cmass cof cisotope c2 cx cabundance) c/ c100
metal c+ cacid c--> c- cCORRECT✅✅salt c+ chydrogen
metal coxide c+ cacid c--> c- cCORRECT✅✅salt c+ cwater
metal chydroxide c+ cacid c--> c- cCORRECT✅✅salt c+ cwater
metal ccarbonate c+ cacid c--> c- cCORRECT✅✅salt c+ ccarbon cdioxide c+ cwater
dicarboxylic cacid c+ cdiol c--> c- cCORRECT✅✅polyester c+ cwater
carboxylic cacid c+ calcohol c--> c- cCORRECT✅✅ester c+ cwater
alkane c+ chalogen c--> c- cCORRECT✅✅haloalkane c+ chydrogen chalide c(under cUV
clight cconditions)
alkene c+ chalogen c--> c- cCORRECT✅✅dihaloalkane
incomplete ccombustion c- cCORRECT✅✅hydrocarbon c+ coxygen c→ ccarbon
cmonoxide c+ cwater
complete ccombustion c- cCORRECT✅✅hydrocarbon c+ coxygen c--> ccarbon cdioxide
c+ cwater
hydration cof cethene c- cCORRECT✅✅ethene c+ csteam c--> cethanol c(with cphosphoric
cacid ccatalyst)
fermentation cof cglucose c- cCORRECT✅✅glucose c--> cethanol c+ ccarbon cdioxide
c(with cyeast ccatalyst)
AND ANSWERS
Equation clinking cmoles, cconcentration cand cvolume c- cCORRECT✅✅moles c=
cconcentration cx cvolume
Equation clinking cmass, cmoles cand crelative cformula cmass c- cCORRECT✅✅mass c=
cmoles cx cMr
Percentage cyield c- cCORRECT✅✅(actual cyield/theoretical cyield) cx c100
Relative catomic cmass c- cCORRECT✅✅(atomic cmass cof cisotope c1 cx cabundance)
c+ c(atomic cmass cof cisotope c2 cx cabundance) c/ c100
metal c+ cacid c--> c- cCORRECT✅✅salt c+ chydrogen
metal coxide c+ cacid c--> c- cCORRECT✅✅salt c+ cwater
metal chydroxide c+ cacid c--> c- cCORRECT✅✅salt c+ cwater
metal ccarbonate c+ cacid c--> c- cCORRECT✅✅salt c+ ccarbon cdioxide c+ cwater
dicarboxylic cacid c+ cdiol c--> c- cCORRECT✅✅polyester c+ cwater
carboxylic cacid c+ calcohol c--> c- cCORRECT✅✅ester c+ cwater
alkane c+ chalogen c--> c- cCORRECT✅✅haloalkane c+ chydrogen chalide c(under cUV
clight cconditions)
alkene c+ chalogen c--> c- cCORRECT✅✅dihaloalkane
incomplete ccombustion c- cCORRECT✅✅hydrocarbon c+ coxygen c→ ccarbon
cmonoxide c+ cwater
complete ccombustion c- cCORRECT✅✅hydrocarbon c+ coxygen c--> ccarbon cdioxide
c+ cwater
hydration cof cethene c- cCORRECT✅✅ethene c+ csteam c--> cethanol c(with cphosphoric
cacid ccatalyst)
fermentation cof cglucose c- cCORRECT✅✅glucose c--> cethanol c+ ccarbon cdioxide
c(with cyeast ccatalyst)