Arrange the following in decreasing order

Question:

Arrange the following in decreasing order of their acidic strength. Explain the arrangement.

C6H5COOH, FCH2COOH, NO2CH2COOH

Solution:

NO2CH2COOH > FCH2COOH > C6H5COOH.

NO2CH2COOH is most acidic among the given three compounds. Electron withdrawing groups like -NO2, increases the acidity of carboxylic acids by stabilizing the conjugate base through resonance effects

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