Question

Which of the following neutralization reactions releases the least heat?

-Sulphuric acid and sodium hydroxide
-Ethanoic acid and sodium hydroxide
-Nitric acid and sodium hydroxide
-Hydrochloric acid and potassium hydroxide

Answer 1

Answer:

Ethanoic acid and sodium hydroxide

Explanation:

Rest are strong acids reacting with strong bases releasing more energy. Ethanoic acid is a weak acid.

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Answer 2

Ethanoic acid and sodium hydroxide. ☑️

Since CH3COOH is a weak acid, hence enthalpy of neutralisation will be lowest for CH3COOH.

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