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Arrange the following in decreasing order of their acidic strength. Give explanation for the arrangement.
$\mathrm{C}_6 \mathrm{H}_5 \mathrm{COOH}, \mathrm{FCH}_2 \mathrm{COOH}, \mathrm{NO}_2 \mathrm{CH}_2 \mathrm{COOH}$
$\mathrm{C}_6 \mathrm{H}_5 \mathrm{COOH}, \mathrm{FCH}_2 \mathrm{COOH}, \mathrm{NO}_2 \mathrm{CH}_2 \mathrm{COOH}$
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Verified Answer
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\text { Electron withdrawing ability of } \mathrm{NO}_2, \mathrm{~F} \text { and } \mathrm{C}_6 \mathrm{H}_5 \text { are as follows: }
$$
$$
\text { Therefore, decreasing order of their acidic strength is given as }
$$
$$
\mathrm{NO}_2 \mathrm{CH}_2 \mathrm{COOH}>\mathrm{FCH}_2 \mathrm{COOH}>\mathrm{C}_6 \mathrm{H}_5 \mathrm{COOH}
$$
\text { Electron withdrawing ability of } \mathrm{NO}_2, \mathrm{~F} \text { and } \mathrm{C}_6 \mathrm{H}_5 \text { are as follows: }
$$
$$
\text { Therefore, decreasing order of their acidic strength is given as }
$$
$$
\mathrm{NO}_2 \mathrm{CH}_2 \mathrm{COOH}>\mathrm{FCH}_2 \mathrm{COOH}>\mathrm{C}_6 \mathrm{H}_5 \mathrm{COOH}
$$
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