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Paragraph The acidic strength of satu...

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The acidic strength of saturated aliphatic carboxylic acids depends mainly upon the inductive effect of the substitutent and its position w.rt, the -COOH group. Whereas electron donating substitutents tend to decrease, electron withdrawing substitutents tend to increase the acid strength. The acidic strength of aromatic carboxylic acids, on the other hand, depends upon both the inductive and the resonance effect of the substitutents.
Which of the following is obtained when 4-methylbenzenesulphonic acid is hydrolysed with excess of sodium acetate?

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
C
4-Methylbenzenesulphonic acid is a stronger acid than acetic acid, therefore, it displaces acetic acid from sodium acetate. Thus,
`4Me-C_(6)H_(4)-SO_(3)H+CH_(3)COON a to 4Me-C_(6)H_(4)SO_(3)^(-)Na^(+) +CH_(3)COOH`
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