Action of heat on hydration of salts

Action of heat on hydration of salts

The heat of hydration is described as the quantity of energy produced when one molecule of ions undergo hydration process. It is a specific form of dissolution energy and the solvent used is water.

The enthalpy of a hydration salt is the change in heat when 1 mole of an anhydrous substance combines with a requisite number of water molecules to form the hydrate. The heat of hydration can be determined if the heat of hydration can be determined solution of anyhydrous salt and the hydrated forms known.

Anyhydrous salts readly combine with the evolution of heat. The only the only difference between hydrate and anyhydrous in the formation of hydrates.

The heat of hydration formula is-

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