Which of the following compound is more acidic ?

C H_{2} | N O_{2} - O | | C - O H

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C H_{2} | N O_{2} - C H_{2} - O | | C - O H

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C H_{2} | C l - C H_{2} - O | | C - O H

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C H_{3} - C l | C | C l - O | | C - O H

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Solution

The correct option is A $C H_{2} | N O_{2} - O | | C - O H$
A is more acidic as the nitro group ( $- N O_{2}$ ) -I group is nearest to the carboxylic group in this case, thus increasing the stability of the anion formed after removal of the $H^{+}$ ion.
Thus, $α$ -nitro acetic acid is more acidic than other compounds.

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Similar questions

$C H_{2} | C l - O H$ is more acidic than $C H_{2} | N O_{2} - C H_{2} - O H$

C H_{2} = O H | C - C H_{2} - O | | C - C H_{3} ⇌ C H_{3} - O | | C - C H_{2} - O | | C - C H_{3} ⇌ C H_{3} - O H | C = C H - O | | C - C H_{3}

I

I I

I I I

C H_{2} = O H | C - C H_{2} (I) - O | | C - C H_{3} ⇌ C H_{3} - O | | C - C H_{2} (I I) - O | | C - C H_{3}

⇌ C H_{3} - O H | C = C H (I I I) - O | | C - C H_{3}

\begin{matrix} O | | C H_{3} - C H_{2} - & C & - C l + C H_{3} - O H / N a O C H_{3} ⟶ \end{matrix}

C H_{3} - O | | C - C H_{2} - C H_{2} - O | | C - O H

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