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?

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.

To determine if the solution of calcium chloride is unsaturated, saturated, or supersaturated, we need to compare the actual concentration of the solution with its maximum solubility at the given temperature.

The concept of solubility refers to the maximum amount of solute that can dissolve in a given amount of solvent at a specific temperature. If a solution contains less solute than its maximum solubility at that temperature, it is considered unsaturated. If it contains exactly the maximum amount, it is saturated. And if it contains more solute than its maximum solubility, it is supersaturated.

In this case, we have a solution containing 70 g of calcium chloride per 100 g of water at 25 degrees Celsius. So, to determine the solubility of calcium chloride at this temperature, we need to find the maximum amount that can dissolve in 100 g of water.

To do this, we can consult a solubility table or reference. Let's assume that the maximum solubility of calcium chloride at 25 degrees Celsius is 74 g/100 g of water.

Comparing this maximum solubility with the actual concentration of the solution (70 g/100 g of water), we can conclude that the solution is unsaturated. This is because the actual concentration is less than the maximum solubility at the given temperature.

Remember that the solubility of calcium chloride at 25 degrees Celsius might differ from the assumption made here, so it is always best to consult reliable references or charts to obtain accurate solubility data.