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Question

What additional factors affect the rate of dissolution of ionic solids like salts?

A
Enthalpy and entropy
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B
Enthalpy and surface area
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C
Entropy and temperature
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D
Enthalpy and temperature
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Solution

The correct option is D Enthalpy and temperature
Enthalpy and temperature affect the rate of dissolution of ionic solids like salts.
Positive value of enthalpy change indicates that the dissolution of ionic salt is endothermic. Increasing temperature will increase the dissolution of ionic solids like salts.
On the other hand,
negative value of enthalpy change indicates that the dissolution of ionic salt is exothermic. Increasing temperature will decrease the dissolution of ionic solids like salts.
Hence, option (D) is the correct answer.

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