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 :

              /u-img/00/01/06/00010638.jpg

  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 .

      Class_12_Chemistry_Carboxylic_Acid_Methos_Of_Preparation_By_Oxidation   

 

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

Class_12_Chemistry_Carboxylic_Acid_Methos_Of_Preparation_By_Hydrolysis

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

   Class_12_Chemistry_Carboxylic_Acid_Methos_Of_Preparation_From_Grignard_Reagent

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

Class_12_Chemistry_Carboxylic_Acid_Methos_Of_Preparation_By_Aycl_Halide

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

Class_12_Chemistry_Carboxylic_Acid_Methos_Of_Preparation_From_Alkyl_Benzene

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