Effect of Temperature and Pressure on Solubility


 
 
Concept Explanation
 

Effect of Temperature and Pressure on Solubility of a Solid

The solubility of a solid in a liquid generally increases with the rise in temperature but hardly changes with the change in pressure. However, the extent of increase in solubility depends upon the nature of the solid. For substances such as calcium sulphate and calcium acetate, the solubility decreases with the rise in temperature. In general, the solubility of those substances which dissolve with the absorption of heat (endothermic process), increases with rise in temperature. On the contrary, the solubility of those substances which dissolve with the evolution of heat (exothermic process), decreases with rise in temperature.

Effect of Temperature on the Solubility of a Gas

The solubility of a gas in a liquid decrease with the rise in temperature, but increases with the increase in pressure.

 

Sample Questions
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Question : 1

The solubility of a gas in a liquid __________________ with the rise in temperature.

Right Option : B
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Explanation
Question : 2

Which of the following factors will increase the solubility of solute in the solvent ?

Right Option : B
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Explanation
Question : 3

Solubility of a solute in a solvent to form a solution  _____________________

Right Option : B
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Explanation
 
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