a) CuCO3 ---> CuO + CO2
CuO + 2HCl ---> CuCl2 + H2O
b) MCuCO3=124g/mol
MCuO=80g/mol
MCuCl2=135g/mol
MHCl=36.5g/mol
124g...........80g
155g.............x=100g CuO
80g...........71g
100g..........x=88.75g(md) HCl
Cp=md/ms*100 ==>ms=md*100/Cp=88.75*100/30=295.83g HCl
c) 80g.......71g......135g
100g......88.75g...x=168.75g (md)CuCl2
d) 80g...71g...135g...18g
100g...88.75g...168.75g....x=22.5gH2O
ms=md+mH2O=295.83+22.5=318.33g
Cp=md/ms*100=/168.75/318.33*100=53%
