Stoichiometry
Enthalpy change resulting, when unit mass of solid is wetted with sufficient liquid, so that further addition of liquid produces no additional thermal effect, is called the heat of

Adsorption
Wetting
Mixing
Complete wetting

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Stoichiometry
Heat of neutralisation of a strong acid and strong base is always a constant value, i.e., 57 KJ/Kg mole. This is because

The strong base and strong acid reacts completely
Only OH⁻ and H⁺ ions react in every case
The strong base and strong acid reacts in aqueous solution
The salt formed does not hydrolyse

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