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  4. Which of the following is correct order for acidity of the given carboxylic acids? (A)PhCOOH (B)o-NO2C6H4COOH (C)p-NO2C6H4COOH (D)m-NO2C6H4COOH

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Q. Which of the following is correct order for acidity of the given carboxylic acids?

$\left(A\right)PhCOOH$

$\left(B\right)o-NO_{2}C_{6}H_{4}COOH$

$\left(C\right)p-NO_{2}C_{6}H_{4}COOH$

$\left(D\right)m-NO_{2}C_{6}H_{4}COOH$

NTA AbhyasNTA Abhyas 2020Organic Chemistry – Some Basic Principles and Techniques

Solution:

Increasing order of acidic nature.

Solution

Electron withdrawing group, increases the acidity of benzoic acid, O-isomer will have higher acidity then corresponding m and p-isomer due to ortho effect.