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Hemicarka5's picture

Koliko se grama kristalne vode oslobadja pri zarenju 1kg plavog kamena,CuSO4 * 5N20?

milicaradenkovic's picture

CuSO4*5H2O--------------->CuSO4+5H2O

n(CuSO4*5H2O)=m/Mr=1000/250=4 mol

n9H2O)=5*n(CuSO4*5H2O)=4*5=20 mol

m(H2O)=n(H2O)*Mr=20*18=360 g