Question

In CuSO4.5H2O,the percentage of water is (Cu=63.5 ,S=32,O=16,H=1)​

Answer 1

Explanation:

There is no percentage of water but there is water of crystallistaion

Answer 2

Answer:

Molar mass cf CaSO4.5H2O = [64 + 32 + (16 x 4)+ 5 (2 x 1 + 16)] = 250  

Mass of water of crystallisation = 5 ( 2 x 1 + 16) = 90

percentage of water of crystallisation = 90/250 x 100 = 36%