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Byju's Answer

Standard XII

Chemistry

Common Ion Effect

Strongest and...

Question

Strongest and weakest acid among the following:
I: ${C H}_{3} - {N O}_{2}$ ; II: ${C H}_{2} - C H O$ ; III: ${C H}_{3} - F$ ; IV: ${C H}_{3} - C H$

I and II

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III and IV

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III and II

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I and III

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Solution

The correct option is A I and II
$C H_{3} N O_{2}$ is the strongest acid due to the $E W$ nature of $N O_{2}$
$↓$
$e^{-}$ withdrawing
and $C H_{2} - C H O$ is the weakest acid due to the $e^{-}$ donating effect. It donates $e^{-}$ density to carboxyl group thereby decreasing the polarity of $C - H$ group.

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Similar questions

Which of the following compounds gives fastest reaction with HBr and why

(i) (CH3)3 COH

(ii) CH3 CH2 CH2OH

(iii) CH3 CHOH CH3

(iv) CH3 (CH3) CH CH2OH

Q. Decreasing order of stability of following alkenes is..
(i)

{C H}_{3} - C H = {C H}_{2}

(ii)

{C H}_{3} - C H = C H - {C H}_{3}

(iii)

{C H}_{3} - C_{3} = C H - {C H}_{3}

(iv)

{C H}_{3} - {C H}_{3} | C = {C H}_{3} | C - {C H}_{3}

Q. Arrange the following in correct order of acidic strength.

(I)

C H_{3} N O_{2}

(II)

N O_{2} C H_{2} - N O_{2}

(III)

C H_{3} - C H_{2} - N O_{2}

(IV)

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

Which are free radical reactions

$I . C H_{3} - C H = C H_{2} + H B r P e r o x i d e - ---- \to C H_{3} - C H_{2} - C H_{2} B r I I . C H_{3} - C H = C H_{2} + H B r \to C H_{3} - C H B r - C H_{3} I I I . C H_{3} - C H = C H_{2} + C l_{2} \to C l C H_{2} - C H = C H_{2} I V . C H_{3} - C H_{3} + C l_{2} \to C l C H_{2} - C H_{3}$

Q. Which is the stronger acid in each of the following pairs?
(i)

C H_{3} - C O O H

and

C H_{2} = C H - C O O H

(ii)

C_{6} H_{5} - C O O H

and

C_{6} H_{5} - C H_{2} - C O O H

(iii)

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

and

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

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Strongest and weakest acid among the following:I: CH3−NO2; II: CH2−CHO; III: CH3−F; IV: CH3−CH

The correct option is A I and IICH3NO2 is the strongest acid due to the EW nature of NO2 ↓ e− withdrawingand CH2−CHO is the weakest acid due to the e−donating effect. It donates e− density to carboxyl group thereby decreasing the polarity of C−H group.

Strongest and weakest acid among the following:
I: ${C H}_{3} - {N O}_{2}$ ; II: ${C H}_{2} - C H O$ ; III: ${C H}_{3} - F$ ; IV: ${C H}_{3} - C H$