How much water should be added to 25gm of copper sulphate to obtain 25% copper sulphate solution?
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Explanation:
25 g of CuSO
4
.5H
2
O
∵249.5 of CuSO
4
.5H
2
O contains 159.59 of CuSO
4
∴1_______________
249.5
159.5
∴25_______________
249.5
159.5
×25=15.98 g
For 8% sol, Let x is the wt of solution
x×
100
8
=15.98
x=
8
1598
=199.75 g
∴ Wt of water =199.75−25=174.75 g
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