Question

you know the solubility of KNO3 at 40°C and at 60°C how can you know its solubility at 50°C (without determining experimentarily)

Answer 1

You can know the solubility of KNO3 at 50°c  by using the solubility curve.

• The solubility of KNO3 at 50°c is 114 grams.
• The solubility curve is a graphical representation between the solubility and temperature of a given substance. The solubility curve plots the change in solubility of a solid at different temperatures in a solvent.
• By plotting the point of solubility at 40°c and 60°c we can estimate the solubility at 50°c graphically.
• Hence, there will be no need for experimentally determining this value.
• The benefit of using a solubility curve is that you can compare the solubilities of different solutes in a solvent at a given temperature. It is also used to determine the solubility of a given solution at a specific temperature.

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