write any three preparation of alkanes?
GANESH , 12 Years ago
Grade 11
Organic Chemistry> write any three preparation of alkanes?...
1 AnswersAarti Gupta
Alkanes can be prepared by following ways:-
1.From unsaturated hydrocarbons:-By hydogenation using catalysts like Pd,Pt or Ni
1.From unsaturated hydrocarbons:-By hydogenation using catalysts like Pd,Pt or Ni
2. From alkyl halides via Wurtz reaction:- In dry ether
CH3Br + 2Na + BrCH3 ------------> CH3-CH3 + 2NaBr
3.From carboxylic acids:-Sodium salt of carboxylic acids on heating with soda lime(mixture of NaOH + CaO) gives alkanes containing 1C atom less than the acid.CO2 removes form acid so process is called decarboxylation.
CH3COONa + soda lime --------------> CH4 + Na2CO3
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Aarti Gupta
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