Question

1. Equal amounts of calcium are taken in test tubes (A) and (B). Hydrochloric acid (HCl) is added to test tube (A) while acetic acid (CH3COOH) is added to test tube (B). In which case, fizzing occurs more vigorously and why ?

Answer 1

Answer:

in second case.

Explanation:

Ch3cooh is a base hence when cu react with base it surely act vigorously and fizzing occurs

Answer 2

Answer:

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Fizzing will occur more vigorously in test tube A. Hydrochloric acid (HCl) is a strong acid whereas acetic acid (CH3COOH) is a weak acid. Being strong acid, the hydrochloric acid solution contains a much greater amount of hydrogen ions in it due to which the fizzing will occur more vigorously in test tube A (containing hydrochloric acid). The fizzing is due to the evolution of hydrogen gas which is formed by the action of acid on the magnesium metal of magnesium ribbon.