Question

Name a substance whose solubility in water increase which temperature but shows a sharp break

Answer 1

Answer:

Cerium (II) sulfate

Answer 2

Answer:

serium sulphate

Explanation:

Gases are usually more soluble at lower temperature, in fact there are some solid substances the show this behavior too. The classical example is Cerium IIIsulphateCerium IIIsulphate Ce2(SO4)3Ce2(SO4)3. This behavior is due to the fact that Ce2(SO4)3Ce2(SO4)3 has an exothermic Heat of Solution. So for the principle of Le Chatelier increasing the temperature cause a decrease of the solubility of the salt that tend to compensate the increment of temperature absorbing energy through the formation of a precipitate, that in this case is an endothermic process.

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