a batch of 1000 kg of KCl is dissolved in sufficient water to make a saturated solution at 363K, where the solubility is 35 wt% KCl in water. the solution is cooled to 293K, at which the solubility of KCl is 25.4 wt%.
a) what is the weight of water required for solution and the weight of crystals of KCl obtained
b) what is the weight of crystal obtained if 5% of the original water in the system evaporates on cooling