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Question

Which of the following reagent/solution can be used to distinguish between methanoic acid and ethanoic acid?

A
Tollen's reagent
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B
FeCl3 solution
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C
NaOH solution
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D
Na2CO3 solution
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Solution

The correct option is A Tollen's reagent
Tollen's reagent (ammoniacal silver nitrate solution) can be used to distinguish between methanoic acid and ethanoic acid.

Tollen's reagent can be reduced by methanoic acid.

However, it is not reduced by ethanoic acid.

Option A is correct.

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