Question

10. Equal lengths of magnesium ribbons are taken in test tubes A and B. Hydrochloric
acid (HCI) is added to test tube A, while acetic acid (CH,COOH) is added to test
tube B. Amount and concentration taken for both the acids are same. In which test
tube will the fizzing occur more vigorously and why?​

Answer 1

Answer:

Because Hcl is stronger than acetic acid

Explanation:

Magnesium metal when reacts with an acid gives off hydrogen gas in the reaction. In test tube A fizzing occurs more vigorously because HCl is stronger acid than acetic acid. Hence, HCl liberates hydrogen gas more vigorously, which causes fizzing more vigorously.

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.