Textbook questions VI — task. Science CBSE, Class 10.

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1. Why do acids not show acidic behaviour in the absence of water?

As dissociation of ions takes place only in the presence of an aqueous solution.
Because water acts as a base.
Because water is a good conductor of electricity, dissociation occurs very fast.
As water is a poor conductor than acids.

2. 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

$CH_3COOH$ is added to test tube B. In which test tube will the fizzing occur more vigorously and why?

$HCl$ is a . In contrast, acetic acid

$CH_3COOH$ is a , so the dissociation of ions takes place faster in , which releases immediately, causing the fizzing to be more vigorous.

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17. Textbook questions VI