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Dissolution of ammonium chloride in water is an endothermic process but still it
dissolves in water readily.

 

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Ammonium chloride's dissolution in water is an endothermic process, i.e., it involves the absorption of heat. Still, it dissolves easily since the process involves an increase in entropy.

Upon dissociation of the ammonium and chloride ions and their interaction with water molecules, entropy increases, and that forces the process of dissolution forward, so it becomes spontaneous even though there is the absorption of heat.

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Divya Sharma

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