Question

The heat of neutralization of any strong acid and a strong base is always constant. This is because:

• A. both the acid and base undergo complete ionization.
• B. during the neutralization, salt and water are formed.
• C. $1$ mole of water is formed from $H^{+}$ and ${OH}^{-}$ ions.
• D. the reaction is exothermic.

Answer 1

Answer: (A)

both the acid and base undergo complete ionization.

Enthalpy of neutralisation :- It is the enthalpy charge that takes place when 1g-equivalent of an acid (or base) in neutralised by 1 g-equivalent of a base (or acid) in dilute solution.

The enthalpy of neutralization of any strong acid and strong base is always constant, i.e. 57.1 kJ because both the acid and base undergo complete ionization.