Răspuns:
Explicație:
a )CaCO3=CaO+CO2
CaO+H2O=Ca(OH)2
Ca(OH)2+HCl=CaCl2+H2O
Ca(OH)2+H2SO4=CaSO4+h2O
b) CaCO3=CaO+CO2
MCaCO3=100
MCaO=56
mCaCO3=500kg
p=80%
m CaO=?
p=mp/mt*100
mt=mp*100/p=500*100/80=625kg
100 kg.........56 kg
625 kg ..........x
x=350 kg CaO