Calculate the solubility in mol dm-3 of 40g of CuSO4 dissolved in 100g of water…

Calculate the solubility in mol dm-3 of 40g of CuSO4 dissolved in 100g of water…

A.
4.00
B.
2.50
C.
0.40
D.
0.25

Correct Answer: Option B
Explanation

Solubility = (frac{text{number of moles of solution}}{text{vol of solution}})

100g of water = 100 cm(^3) = 0.1 dm(^3).

CuSO(_4) = 160 g/mol

No of moles of CuSO(_4) in 40g = (frac{40}{160})

= 0.25 mol.

Solubility = (frac{0.25}{0.1})

= 2.5 moldm(^{-3}).

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