Masa kristalne vode

Submitted by dejanbr1 on Thu, 01/30/2014 - 11:08
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Koliko se grama ktistalne H2O oslobadja pri sagorevanju 1kg plavog kamena?

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milicaradenkovic - Thu, 01/30/2014 - 11:47

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

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

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

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