Solubility = number of moles of solutionvol of solution\frac{\text{number of moles of solution}}{\text{vol of solution}}vol of solutionnumber of moles of solution
100g of water = 100 cm3^{3}3 = 0.1 dm3^{3}3.
CuSO4_{4}4 = 160 g/mol
No of moles of CuSO4_{4}4 in 40g = 40160\frac{40}{160}16040
= 0.25 mol.
Solubility = 0.250.1\frac{0.25}{0.1}0.10.25
= 2.5 moldm−3^{-3}−3.
