Amount of solutes A,B and C in 500 g of water at `30^(@)C ,60^(@)C , 100^(@)C ` in their saturated solutions are given below.
`{:(,30^(@)C,60^(@)C,100^(@)C),(A,140 g, 135 g,131 g),(B,160 g, 175 g, 182 g ),(C,152 g, 170 g, 161 g):}`
When the hot saturated solutions of A, B and C are cooled slowly, identify the order in which they crystallize out of a solution. Give reason in support of your answer.

Explanation

(i) companson of change in solubilities with change in temperature
(ii) companson of change in solubilities with decrease in temperature from 100°C to 30°C
(iii) effect of cooling on nature of the solutions of A, B and C, respectively.
(iv) relation between extent of solubility and crystallization