To determine whether the 10 grams of KCl (potassium chloride) in solution at 10 degrees Celsius is unsaturated, saturated, or supersaturated, we need to consider the solubility of KCl at that temperature.
At 10 degrees Celsius, the solubility of KCl in water is approximately 28 grams per 100 grams of water. Since 10 grams is significantly less than 28 grams, the solution can hold more solute.
Based on this information, the solution of 10 grams KCl at 10 degrees Celsius is:
a. unsaturated.