CH-475
Separation and purification
Chemistry · Secondary 3 · Medium · Separation and purification
The solubility of salt Z is 80 g per 100 g of water at 80 °C and 40 g per 100 g of water at 20 °C. A saturated solution is prepared by dissolving 80 g of Z in 100 g of water at 80 °C. How much salt Z will crystallise out when the solution is cooled to 20 °C?
- 20 g
- 40 g
- 60 g
- 80 g
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.