Question

If 100 kg of raw sugar containing 95% sucrose, 3% water, and 2% soluble non crystallizable inert solids is dissolved in 30 kg of hot water and cooled to 20oC, calculate: (a) kilograms of sucrose that remains in solution, (b) crystalline sucrose, (c) the purity of the sucrose (in % sucrose) obtained after centrifugation and dehydration to 0% moisture. The solid phase contained 20% water after separation from the liquid phase in the centrifuge. A saturated solution of sucrose at 20oC contains 67% sucrose (w/w).

Answer 1

Just make mass balance