Explain the effect of temperature on the solubility of:
(a) KNO3
(b) NaCl
(c) Na S04.10H O
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The solubility of a given solute in a given solvent typically depends on temperature. Many salts show a large increase in solubility with temperature. Some solutes exhibit solubility that is fairly independent of temperature. A few, such as cerium(III) sulfate, become less soluble in water as temperature increases. This temperature dependence is sometimes referred to as retrograde or inverse solubility, and exists when a salt’s dissolution is exothermic; this can be explained because, according to Le Chatelier’s principle, extra heat will cause the equilibrium for an exothermic process to shift towards the reactants.
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