Question

EQUAL LENGTHS OF MAGNESIUM RIBBONS ARE TAKEN IN TEST TUBES A A AND B HYDROCHLORIC ACID IS ADDED TO TEST TUBES IN WHICH CASE FIZZING OCCURS MORE VIGOROUSLY

Answer 1

Hello

The question looks incomplete. I believe that in test tube B acetic acid is added

When magnesium ribbon is put into both the test tubes, hydrogen gas is liberated.

Mg + 2HCl => MgCl2 + H2

Mg + 2CH3COOH => Mg(CH3COO)2 + H2

This occurs much vigorously in test tube containing hcl as it is a strong acid.

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.