Question

the solubility of potassium chloride is 34.2 g/100 g h2o at 20°c. a 68.4-g sample of potassium chloride is added to 200.0 g of water at 20°c. is the solution saturated, unsaturated, or supersaturated?

Answer 1

We can say whether the solution is saturated, unsaturated or supersaturated by knowing the concentration of the solute in the solvent and comparing it to the value of solubility as a function of temperature. We do as follows:

g KCl / g H2O = 68.4 g / 200 g = 0.342 g KCl / g H2O

Therefore, the solution is saturated.

Hope this answers the question.