Calculate the solubility in mol dm-3 of 40g of CuSO4 diss...
Calculate the solubility in mol dm-3 of 40g of CuSO4 dissolved in 100g of water at 120°C?
[Cu = 64, S = 32, O = 16]
4.00
2.50
0.40
0.25
Correct answer is B
Solubility = number of moles of solutionvol of solution
100g of water = 100 cm3 = 0.1 dm3.
CuSO4 = 160 g/mol
No of moles of CuSO4 in 40g = 40160
= 0.25 mol.
Solubility = 0.250.1
= 2.5 moldm−3.
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