Răspunsuri

2014-06-04T17:29:08+03:00
CaCO3 + H2SO4 ---> CaSO4 + H2O + CO2
1 mol CaCO3.....98 g H2SO4
1 kmol CaCO3...........x kg CaCO3
x = 98 kg H2SO4
c%=md/ms*100=>ms=98/50*100=196 kg solutie H2SO4