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

Chemistry JAMB 1990

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)

  • 0.13
  • 0.25
  • 1.25 checkmark
  • 2.00

The correct answer is: 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
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