Arrange the following haloacetic acids in strictly decreasing order of acidic strength: (I) (II) (III) (IV)

Question

Arrange the following haloacetic acids in strictly decreasing order of acidic strength: (I) $FCH_2COOH$ (II) $ClCH_2COOH$ (III) $BrCH_2COOH$ (IV) $ICH_2COOH$

Prashant Kotian · Accepted Answer

Correct answer: A. Acidic strength depends on the effect stabilizing the carboxylate anion. Since the distance (all -carbon) and number (one halogen each) are tied, we evaluate Power. Electronegativity dictates the power: , making fluoroacetic acid the strongest.

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