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Equal lengths of magnesium ribbons are t...

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 `(CH_(3)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?

Text Solution

Verified by Experts

Fizzing in the reaction is due to the evolutin of hydrogen gas by the action of metal on the acid
`Mg(s)+underset(InA)HCl(aq)tounderset("Mag. chloride")(MgCl_(2)(aq))" "+H_(2)(g)`
`Mg(s)+2CH_(3)underset("In B")(COOH)(aq)tounderset("Mag. acetate")((CH_(3)COO)_(2)Mg(aq)+H_(2)(g))`
Since hydrochloric acid is a stronger acid than acettic acid, fizzing occurs more readily in tube A than in tube B. Actually hydrogen gas will evolve at more brisk speed in test tube A.
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