The solubility of a solid in a liquid is significantly affected by temperature changes. Solute $+$ Solvent…

The solubility of a solid in a liquid is significantly affected by temperature changes.
Solute $+$ Solvent $ightleftharpoons$ Solution.
The system being in a dynamic equilibrium must follow Le-chatelier's principle. Considering the Le-chatelier's principle which of the following is correct?
  1. $\Delta \mathrm{H}_{\mathrm{sol}}>0 ;$ solubility $\uparrow ;$ temperature $\downarrow$
  2. $\Delta \mathrm{H}_{\text {sol }} < 0 ;$ solubility $\downarrow ;$ temperature $\uparrow$
  3. $\Delta \mathrm{H}_{\text {sol }}>0 ;$ solubility $\downarrow ;$ temperature $\uparrow$
  4. $\Delta \mathrm{H}_{\text {sol }} < 0 ;$ solubility $\uparrow ;$ temperature $\uparrow$

Solution

According to Le-chateliers principle, for an exothermic reaction $(\Delta \mathrm{H} < 0)$ increase in temperature decreases the solubility.

Asked in: JEE-TOPICTESTS-CHEMISTRY

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