The solubility of potassium chloride is 34.2 g/100.0 g of water at 20^oC.Which of the following best describes a solution prepared by adding 58.3 g of potassium chloride to 150.0 g of water at this temperature?

Question

Quizplus · Accepted Answer

Since the solubility of KCl is 34.2 g/100.0 g of water at 20°C, it means that at this temperature, 100 g of water can dissolve 34.2 g of KCl. Therefore, for 150.0 g of water, the amount of KCl that can dissolve is (34.2 g/100 g) x (150.0 g) = 51.3 g. The amount of KCl added (58.3 g) is greater than the amount that can dissolve (51.3 g), thus 7.0 g of KCl will remain undissolved.

The Solubility of Potassium Chloride Is 34