Which one of the following undergoes reaction with 50% sodium hydroxide solution to give the corresponding alcohol and acid?

  • Option 1)

    Phenol

  • Option 2)

    Benzaldehyde

  • Option 3)

    Butanol

  • Option 4)

    Benzoic acid.

 

Answers (1)

As we learnt in 

Cannizzaro's reaction -

Shown by aldehydes which do not have \alpha- H atom and undergo disproportion (self-oxidation reduction) process to produce alcohol and carboxylic acid salt.

- wherein

2HCHO\overset{conc.NaOH}{\rightarrow}HCOONa+CH_{3}OH

 

 It is a cannizzaro reaction

Thus, A is an aldehyde without \alpha -hydrogen \: atom


Option 1)

Phenol

This option is incorrect

Option 2)

Benzaldehyde

This option is correct

Option 3)

Butanol

This option is incorrect

Option 4)

Benzoic acid.

This option is incorrect

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