A solution in which no more solute can be dissolved at a given temperature and pressure is called a saturated solution. Which of the following processes are in equilibrium in a saturated solution?
A
Dissolution and condensation
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B
Dissolution and crystallization
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C
Sublimation and crystallization
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D
Sublimation and condensation
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Solution
The correct option is B Dissolution and crystallization When we reach the saturation point, the dissolving process does not really stop. What happens is that particles are returning to the surface of the salt at the same rate as they are leaving. The amount of material that is dissolving balances the amount of material that is crystallizing. We call this kind of balance a dynamic equilibrium. The equilibrium is between the process of dissolution and crystallization.