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In which of the following salts, the solubility increases appreciably with increase in temperature?
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KBr
The solubility of solid solute depends upon temperature.
Variation of solubilities of some ionic solids with temperature
- Generally, rise in temperature increase the solubility. This is due to expansion of holes or empty spaces in the liquid solvent. Generally, $10^{\circ} \mathrm{C}$ rise in temperature, increase the solubility of solids two-fold.
- Dissolution process may be endothermic or exothermic.
- The solubility of the substances like $\mathrm{NaBr}, \mathrm{NaCl}, \mathrm{KCl}$, etc. changes slightly with the increase in temperature.
- The solubility of the salts like $\mathrm{NaNO}_3, \mathrm{KNO}_3, \mathrm{KBr}$, etc. increases appreciable with the increase in temperature.
- The solubility of $\mathrm{Na}_2 \mathrm{SO}_4$ first increase and after $30^{\circ} \mathrm{C}$ decreases with the increase in temperature.
Variation of solubilities of some ionic solids with temperature
- Generally, rise in temperature increase the solubility. This is due to expansion of holes or empty spaces in the liquid solvent. Generally, $10^{\circ} \mathrm{C}$ rise in temperature, increase the solubility of solids two-fold.
- Dissolution process may be endothermic or exothermic.
- The solubility of the substances like $\mathrm{NaBr}, \mathrm{NaCl}, \mathrm{KCl}$, etc. changes slightly with the increase in temperature.
- The solubility of the salts like $\mathrm{NaNO}_3, \mathrm{KNO}_3, \mathrm{KBr}$, etc. increases appreciable with the increase in temperature.
- The solubility of $\mathrm{Na}_2 \mathrm{SO}_4$ first increase and after $30^{\circ} \mathrm{C}$ decreases with the increase in temperature.
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