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WHY SOLUBILITY DECREASES WITH INCREASE IN TEMP???....(SOLUTION)

WHY SOLUBILITY DECREASES WITH INCREASE IN TEMP???....(SOLUTION)

Grade:12th pass

3 Answers

Lakshay Singhal
33 Points
7 years ago
Henry''s Law
The solubility of a gas in a liquid depends on temperature, the partial pressure of the gas over the liquid, the nature of the solvent and the nature of the gas. The most common solvent is water.
Gas solubility is always limited by the equilibrium between the gas and a saturated solution of the gas. The dissolved gas will always follow Henry''s law.
The concentration of dissolved gas depends on the partial pressure of the gas. Thepartial pressure controls the number of gas molecule collisions with the surface of the solution. If the partial pressure is doubled the number of collisions with the surface will double. The increased number of collisions produce more dissolved gas. 
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Saurabh Anand
38 Points
7 years ago

As temperature increases the mean kinetic energy of all particles present increase, allowing for the gases dissolved to evaporate more readily, as they are in a greater state of vibratory motion - that is they are present in a more gaseous form. Phase is determined by the extent of motion of particles, which is determined by the intermolecular forces acting between molecules. An increase in temperature will also increase the motion of dissolved particles by weakening the forces acting between the solute and solvent. This allows the dissolved gases to evaporate out of solution. Hence an increase in temperature corresponds to a decrease in the solubility of gases in liquids.

FITJEE
43 Points
7 years ago

IT DEPENDS ON THE TYPE OF PROCESS ------

                                             IF THE PROCESS IS ENDOTHERMIC THE SOLUBILITY WILL INCREASE WITH INCREASE IN                                                       TEMPERATURE BUT IF THE PROCESS IS EXOTHERMIC THE SOLUBILITY WILL DECREASE WITH                                               INCREA.... IN TEMP.

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