Răspunsuri

2014-05-24T20:38:41+03:00
CaCO3 + H2SO4 ---> CaSO4 + H2CO3
1 mol CaCO3......98 g H2SO4
10 kmoli CaCO3..........x kg H2SO4     x = 980 kg H2SO4 = md
c%=md/ms*100=>ms=md/c*100=980/50*100=1960 kg solutie H2SO4
5 4 5