Question

Suppose we are dealing with calcium chloride as opposed to the chemical in the video. If a solution contains 70 g of calcium chloride per 100 g of water at 25 degrees Celsius, is the solution unsaturated, saturated, or supersaturated?

Answer 1

The solution is unsaturated. According to the chart, CaCl2 solubility is increased with increased in temperature and concentration increases with added solute. If the at 20 Celsius saturation is approximately 75 g per 100ml and 25 Celsius saturation is approximately 90 g per 100 ml, supersaturation is above the curve, then at 70 g per 100 ml is unsaturated since it is below the curve.