The correct order of strengths of the carboxylic acids is [2016]

Question

The correct order of strengths of the carboxylic acids

is [2016]

Smart Achievers · Accepted Answer

(2)

Acidic strength $\propto - I$ effect

As oxygen is more electron withdrawing, (II) and (III) show greater $- I$ effect than (I). Thus, (I) is least acidic. Out of (II) and (III), (II) is more acidic than (III) as distance of O increases from –COOH group and the acidic strength decreases.

Solution

Q.
The correct order of strengths of the carboxylic acids

is [2016]

1 I > II > III

2 II > III > I

3 III > II > I

4 II > I > III

Ans.
(2)

Acidic strength $\propto - I$ effect

As oxygen is more electron withdrawing, (II) and (III) show greater $- I$ effect than (I). Thus, (I) is least acidic. Out of (II) and (III), (II) is more acidic than (III) as distance of O increases from –COOH group and the acidic strength decreases.

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