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Gases in Liquids

The solubilit...

Question

The solubility of a solute decrease with temperature when dissolution is exothermic.
If true enter 1, if false enter 0.

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Solution

The solubility of a solute decrease with temperature when dissolution is exothermic.
e.g., $C a C l_{2}, C a (O H)_{2}, (C H_{3} C O O)_{2} C a, N a O H, K O H$ etc.
$C a (O H)_{2} (s) + a q \to C a (O H)_{2} (a q) + Q k c a l$ .
Since heat is evolved, with increase in the temperature, the equilibrium shifts in the reverse direction so as to nullify the effect of increased temperature. Hence, the solubility decreases.

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