Chapter 2: Acids, Bases and Salts

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Q
Acids,Bases, and Salts

Question:

Equal lengths of magnesium ribbons 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 test tube will the fizzing occur more vigorously and why?

Answer:

When a metal reacts with an acid, hydrogen gas is formed along with the formation of a salt. The general chemical equation for this reaction is shown b

Metal + Acid → Salt + Hydrogen gas

When magnesium ribbon reacts with acetic acid or hydrochloric acid, frizziness occurs due to the formation of hydrogen gas. Hydrochloric acid is a strong acid while acetic acid is a weak acid. So, hydrochloric acid creates a greater amount of hydrogen ions as compared to acetic acid, so frizziness occurs more rapidly in test tube A than in test tube B.


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