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  • Arrange the following in decreasing order of their acidic strength. Explain the arrangement. {C}_{6} {H}_{5} {COOH}, {FCH}_{2} {COOH}, {NO}_{2} {CH}_{2} {COOH}

Arrange the following in decreasing order of their acidic strength. Give explanation for the arrangement.

\text {C}_{6}\text {H}_{5}\text {COOH},\text {FCH}_{2}\text {COOH},\text {NO}_{2}\text {CH}_{2}\text {COOH}

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\text {NO}_{2}\text {CH}_{2}\text {COOH}>\text {FCH}_{2}\text {COOH}>\text {C}_{6}\text {H}_{5}\text {COOH}


\text {-NO}_{2}  and \text {-F} groups are electron withdrawing groups that increase the acidity due to stable nature of resulting conjugate base. Whereas the electron-donating group decrease the acidity as the resulting conjugate base is unstable.

Higher the electronegativity, greater the acidic strength.

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infoexpert23

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