Two kg of aturated aqueou olution of a highly oluble component A at 50 °C i cooled of A are (0. 5 kg 4)/(kgwater) at 50 °C and to 30 °C. The olubility of A (0. 3 kg 4)/(kgwater) at 30 °C. The amount in kg of the crytal formed i-----?
a) 1. 47 kg
b) 0. 57 kg
c) 0. 68 kg
d) 0. 07 kg