The solubility in moles per dm3 of 20g of CuSO4 dissolve in 100 of water…

The solubility in moles per dm³ of 20g of CuSO₄ dissolve in 100 of water at 180°C is?
(Cu = 63.5, S = 32, O = 16)

Correct Answer: Option C

Explanation

Solubility in moles per dm³
No of moles = (20)/(159.5) χ 0.125 moles
in 100 g of moles = (0.125)/(100) χ 1000 = 1.25 moles