Chapter 21, Problem 1STP

To determine

The amount of potassium nitrate is to be determined to add in a given mass of water at given temperature.

Answer to Problem 1STP

  $70gmKN{O}_3$ will have to add to of $100gm$ water at $40°C$ to prepare a saturate solution.

Explanation of Solution

Solubility of potassium nitrate is maximum at $40°C$ .At this temperature $70gm$ of potassium nitrate is used.

Conclusion:

  $70gmKN{O}_3$ will have to add to $100gm$ of water at ${40}^{0}C$ to prepare a saturate solution.