Chapter 16.1, Problem 4LC

Interpretation Introduction

Interpretation: To describe the state of equilibrium in a saturated solution that contains undissolved solute.

Concept introduction: Equilibrium is the state of a system when the rate of a forward reaction becomes equal to the rate of a backward reaction and the saturated solution is defined as that solution in which the solute is dissolved in a maximum concentration in the solvent.

Answer to Problem 4LC

The rate of dissolution remains in equilibrium with the rate of crystallization in the saturated solution.

Explanation of Solution

A saturated solution is a solution in which the dissolved solute and undissolved solute remain in equilibrium. The undissolved solute is said to be that solute that is not dissolved in the solution and exists in the solid form in the solution.

The total amount of solute that is in the dissolved form will be in equilibrium with the amount of solute that is undissolved. Hence, the rate of solvation or dissolution remains equal to the rate of crystallization. This is the state of equilibrium in the saturated solution that contains undissolved solute.

Conclusion

The rate of dissolution remains in equilibrium with the rate of crystallization in the saturated solution.