Q4. A 35 wt% Na2 SO4 Solution in water, initially at 50°C, is fed to a crystallizer at 20°C. The Product stream contains hydrated crystals Na2 SO4 cdot 10H2O in equilibrium with a 20 Wt % Na2 SO4 Solution. The molecular weights of Na2 SO4 and Na2 SO4 cdot 10H2O are 142 and 322 respectively. The feed rate of the 35 % Solution required to Produce 500 Kg/hr of hydrated crystals is.
- (1) 403 kg/hr
- (2) 603 kg/hr
- (3) 803 kg/hr
- (4) 1103 kg/hr