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Submitted by Hemicarka5 on Sat, 02/01/2014 - 18:46
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Koliko se grama kristalne vode oslobadja pri zarenju 1kg plavog kamena,CuSO4 * 5N20?

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milicaradenkovic - Sat, 02/01/2014 - 18:56

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