Class 12 Chemistry Aldehydes Ketones Acids Method of Preparation of Carboxylic Acids

Method of preparation         

 It is prepared basically from oxidation and hydrolysis method.

  1.  From alcohols by oxidation: For this alkaline kMnO4 , CrO3 in H2 SO4,acidified K2 Cr2 O7 like oxidising agents are used.The reaction occurs as shown below :


  1. Oxidation of Aldehyde  and Ketones: In this aldehyde and ketones can be oxidised in presence of oxidising agents like alkaline potassium permagnante as shown below .



3.Hydrolysis of nitriles: In this cyanides are hydrolysed to form amides which further on hydrolysis yields carboxylic acid .


4.From Grignard reagent : In this grignard reagent is made to react with carbondioxide .


5.From acyl halide: In this hydrolysis of acyl halide is hydrolysed to form respective carboxylic acid .


6.From alkyl benzene :In this alkyl benzene is oxidised in presence of oxidising agent like alkaline potassium permagnate to form respectice carboxylic acid .


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