Based on the solubility curve, a solution containing 70 grams of NaNO₃ at 30°C (in 100 ml of H2O) is unsaturated.
The types of solubility.
In Chemistry, there are different types of solubility and these include the following:
A solution is said to be unsaturated when it contains lesser solute than the equilibrium amount.
On the other hand, a solution is said to be saturated when it is in dynamic equilibrium with the dissolved solute.
Based on the solubility curve attached in the image below, we would determine the solubility of each of the solutions as follows:
- Solution with 70g of NaNO₃ at 30°C:
Mass of solvent (H₂0) = 100 grams.
Mass of solute (NaNO₃) = 95 grams
Therefore, this solution is unsaturated because 70g is lesser than 95 grams.
- Solution with 50g of NH₄Cl at 50°C:
Mass of solvent (H₂0) = 100 grams.
Mass of solute (NH₄Cl) = 50 grams.
Therefore, this solution is saturated because 50g is in dynamic equilibrium with 50 grams.
- Solution with 10g of KClO₃ at 50°C:
Mass of solvent (H₂0) = 100 grams.
Mass of solute (KClO₃) = 10 grams.
Therefore, this solution is saturated because 10g is in dynamic equilibrium with 10 grams.
- Solution with 90g of KI at 0°C:
Mass of solvent (H₂0) = 100 grams.
Mass of solute (KI) = 129 grams
Therefore, this solution is unsaturated because 90g is lesser than 129 grams.
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