The heat of neutralisation remains constant, when there is a reaction between dilute solutions of strong _____________________?
Correct answer: A. Base and strong acid
- A. Base and strong acid
- B. Base and weak acid
- C. Acid and weak base
- D. None of these
Explanation
Dilute strong acid and strong base are both completely ionised, so their net ionic reaction is always H+ + OH− forming water and has nearly constant heat of neutralisation. Weak acids or bases require additional ionisation energy, so their heats vary.
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