Question

20 kg of the saturated solution at 60°C was cooled to 0°C. How much salt will crystallize from this solution if the solubility of salt at 60°C is 110g in 100g of water and at 0°C - 13.11g in 100g of water?

please help​

Answer 1

The amount of salt that will crystallize from the solution when cooled to 0°C is 19,378g.

Step-by-step explanation:

According to the given information, we know that the solubility of salt at 60°C is 110g in 100g of water and at 0°C it is 13.11g in 100g of water.

The saturated solution at 60°C weighs 20 kg. In order to find the amount of salt that will crystallize when cooled to 0°C, we need to calculate the difference between the amount of salt that can dissolve at 60°C and the amount of salt that can dissolve at 0°C.

Amount of salt at 60°C = 110g/100g x 20,000g

= 22,000g

Amount of salt at 0°C = 13.11g/100g x 20,000g

= 2,622g

Therefore, the amount of salt that will crystallize is 22,000g - 2,622g = 19,378g