Question

The heat of neutralisation will be highest in which of the following reactions?

• A. $N{H}_{4}OH$ and $C{H}_{3}COOH$
• B. $N{H}_{4}OH$ and $HCl$
• C. $NaOH$ and $C{H}_{3}COOH$
• D. $NaOH$ and $HCl$

Answer 1

The correct option is D $NaOH$ and $HCl$

Heat of neutralisation for a strong acid and a strong base is maximum.
$NaOH$ is a stong base and $HCl$ is a strong acid. So a reaction between them will have highest heat of neutralisation.