Solubility of FeSO4.7HO is 47.5 kg and 33.8 kg in 100 kg of water at 318K and 305K respectively. (i) Estimate the theoretical weight of saturated solution at 318K to be charged to get 1000 kg of crystals by cooling to 305K. (ii) If 5% of total water entering the system is lost by evaporation, what is the yield of crystal in this case? (iii) At the conditions of (ii), how much of feed solution is required for a harvest of 1000 kg of crystals?