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Why do the solubilities of most of the s...

Why do the solubilities of most of the solids in water increase with an increase in temperature ?

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(i) principle of dissolution of solids in liquids
(ii) process of dissolution
(iii) movement of molecules during solubility
(iv) effect of temperature on the movement of molecules
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PEARSON IIT JEE FOUNDATION-WATER, SOLUTION, SOLUBILITY AND HYDROGEN-CONCEPT APPLICATION (LEVEL 2)
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  19. Why does boiling of water expel the dissolved gases?

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