(B) The reduction of carboxylic acids with $HI$ in the presence of red phosphorus $(P)$ is a strong reduction method that converts the carboxylic acid

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(B) The reduction of carboxylic acids with $HI$ in the presence of red phosphorus $(P)$ is a strong reduction method that converts the carboxylic acid group $(-COOH)$ into a methyl group $(-CH_3)$.Propionic acid is $CH_3-CH_2-COOH$.Upon reduction,it forms propane $(CH_3-CH_2-CH_3)$.The reaction is: $CH_3-CH_2-COOH + 6HI \xrightarrow{\text{Red } P} CH_3-CH_2-CH_3 + 2H_2O + 3I_2$.

Class 12 Chemistry 8-2.Carboxylic acids and Their derivative Properties of Carboxylic Acids and Their Derivatives

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Propionic acid is subjected to reduction with hydroiodic acid in the presence of a little $P$,the product formed is

A
Ethane
B
Propane
C
Butane
D
None of these

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8-2.Carboxylic acids and Their derivative

Subtopic

Properties of Carboxylic Acids and Their Derivatives

Rearrange the following in the increasing order of acidic strength:
$(i)$ benzoic acid $(ii)$ $p$-methoxybenzoic acid $(iii)$ $o$-methoxybenzoic acid

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Write the structure of the product of the following reaction.

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Identify the major product $P$ in the following reaction:
$CH_2=C(OLi)-CH=C(OLi)OEt \xrightarrow[(ii) H_3O^+]{(i) CH_3CH_2I / THF} P$

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For which carboxylic acid,the $pK_a$ is the lowest :

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Between $CH_3COOH$ and $HCOOH$,$HCOOH$ will be:

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Propionic acid is subjected to reduction with hydroiodic acid in the presence of a little $P$,the product formed is

Similar Questions

Rearrange the following in the increasing order of acidic strength:$(i)$ benzoic acid $(ii)$ $p$-methoxybenzoic acid $(iii)$ $o$-methoxybenzoic acid

Write the structure of the product of the following reaction.

Identify the major product $P$ in the following reaction:$CH_2=C(OLi)-CH=C(OLi)OEt \xrightarrow[(ii) H_3O^+]{(i) CH_3CH_2I / THF} P$

For which carboxylic acid,the $pK_a$ is the lowest :

Between $CH_3COOH$ and $HCOOH$,$HCOOH$ will be:

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Rearrange the following in the increasing order of acidic strength:
$(i)$ benzoic acid $(ii)$ $p$-methoxybenzoic acid $(iii)$ $o$-methoxybenzoic acid

Identify the major product $P$ in the following reaction:
$CH_2=C(OLi)-CH=C(OLi)OEt \xrightarrow[(ii) H_3O^+]{(i) CH_3CH_2I / THF} P$