Chapter 21, Problem 49R

To determine

The temperature at which a solution of potassium nitrate in water is saturated is to be written.

Answer to Problem 49R

A solution of $80g$ potassium nitrate in $100mL$ of water is saturated attemperature nearly $48°C$

Explanation of Solution

Introduction:

The graph shows solubility curve for a particular substance. It tells aboutmaximum solubility of a solute at particular temperature.

The graph shows- for $80g$ of Potassium nitrate per $100g$ of water, the temperature is approximately $48°C$ (see x-axis) which means that a solution of $80g$ potassium nitrate in $100mL$ of water forms a saturated solution at nearly $48°C$ temperature.

Conclusion:

Thus, a solution of 80g potassium nitrate in $100mL$ of water is saturated attemperature nearly $48°C$ .