What are method of preparation of alkane! Write any 4
Dear Student,
Laboratory Method of preparation of alkanes:
1. From unsaturated Hydrocarbons
2. From Haloalkanes
- By Wurtz Reaction
- By reduction
3. By the Reduction of Aldehydes and Ketones
4. From Grignard’s Reagent
5. From salts of Carboxylic acids
- By Kolbe’s electrolytic method
- By Heating Na-salt of Carboxylic acid
6. From Metal Carbides
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From Grignard’s Reagent
Hydrolysis of Grignard's reagent in the presence of ether gives alkanes.
RMgX + H2O 
R-H + Mg(OH)X
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