Equal lengths of magnesium ribbons are taken in test tubes A and B. HCl is added to test tube A, while acetic acid is added to test tube B. Amount and concentration of both the acids is same. In which test tube will the fizzing occur more vigorously and why?

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Solution

In test tube A fizzing occurs more vigorously because HCl is a stronger acid than acetic acid. Hence, HCl liberates hydrogen gas more vigorously, which causes fizzing more vigorously.

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