Why solid NaCl starts separating out from a saturated solution of NaCl if HCl gas is passed through it ?

Explanation

To understand why solid NaCl starts separating out from a saturated solution of NaCl when HCl gas is passed through it, we can break down the explanation into several steps:

### Step-by-Step Solution:

1. **Understanding Saturated Solutions**: A saturated solution of NaCl means that the solution has dissolved as much NaCl as it can at a given temperature. At this point, the solution is in equilibrium with the solid NaCl, meaning the rate of dissolution of NaCl equals the rate of precipitation of NaCl.

2. **Dissociation of HCl**: When HCl gas is passed into the saturated NaCl solution, it dissolves in the water and dissociates into H⁺ and Cl⁻ ions. This increases the concentration of Cl⁻ ions in the solution.

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