Sodium chloride solution freezes at lower temperature then water but boils at higher temperature than water. Explain.

Explanation

To explain why sodium chloride (NaCl) solution freezes at a lower temperature than water but boils at a higher temperature than water, we can break down the concepts of freezing point depression and boiling point elevation.

### Step-by-Step Solution:

1. **Understanding Freezing Point Depression**:
- When a non-volatile solute, such as sodium chloride (NaCl), is dissolved in a solvent (like water), it disrupts the formation of the solid phase (ice) when the solution is cooled.
- The presence of solute particles interferes with the ability of the solvent molecules to arrange themselves into a solid structure, which results in a lower freezing point for the solution compared to pure water.

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