The heat of neutralization is the highest in the following case

Options

(a) a strong acid and a weak base
(b) a weak acid and a strong base
(c) a strong acid and a strong base
(d) a weak acid and a weak base

Correct Answer:

a strong acid and a strong base

Explanation:

The enthalpy change when one mole of H⁺ ions is completely neutralised by one mole of OH⁻ ions in dilute solution is defined as the enthalpy of neutralisation.The average enthalpy of neutralisation of a strong acid by a strong base is -57.1 kJ.