Răspuns:
Explicație:
a)CaCO3=CaO+CO2
CaO+2H2O=Ca(OH)2+H2
Ca(OH)2+2HCl=CaCl2+2H2O
Ca(OH)2+H2SO4=CaSO4+2H2
b)mCaCO3=500 g
p=80%
mCaO=?
CaCO3=CaO+CO2
MCaCO3=40+12+3*16=100 g/mol
MCaO=40+16=56g/mol
n=m/M
p=mpura/mimpura*100
mpura=p*m impura/100=80*500/100=400 g
100 g..CaCO3........56 gCaO
400 g x
x=224 gCaO