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Question

On decreasing the temperature, the solubility of common salt (NaCl) in water .

A
decreases
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B
increases
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C
remains the same
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Solution

The correct option is A decreases
Solubility of a solute in a solvent varies with temperature. Incase of NaCl, the solubility is directly proportional to the temperature.
If the temperature increases, its solubility in water increases.

In other words, more NaCl can be dissolved in the same amount of solvent at higher temperature.

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