solve ; the solubility of KNO3 at 15 degree is 0.5 mol/dm3. calculate the mass of salt which was deposited when 1dm3 of solution contains 1.96 mol/dm³ of the salt was cooled from 100°c to 15°c?

Marvelous_1

3 years ago

Explanation
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
.