Question

Which of the following acid will release maximum amount of heat when completely neutralized by strong base NaOH?

• A. 1M HCl
• B. 1M $HN{O}_3$
• C. 1M $HCl{O}_4$
• D. 1M $H_{2}S{O}_4$

Answer 1

The correct option is D 1M $H_{2}S{O}_4$

Ionisation of $H_{2}S{O}_4$ gives double amount of $H^{+}$ ions as compared to other acids
$H_{2}S{O}_4⟶2H^{+}+S{O}_4^{-2}$

Therefore 1M $H_{2}S{O}_4$ release more amount of heat compared to others.