Alkanes are prepared by the following methods
I) Decarboxylation of salts of fatty acids
II) Wurtz reaction
III) Kolbe's electrolysis
IV) Sabatier - Senderen's reaction
V) Reduction of alkyl halides
In which of these methods, a sigma bond is formed between carbon atoms
The correct option is C.
Only II, III
Wurtz reaction: Wurtz reaction is an organic chemical coupling reaction wherein sodium metal is reacted with two alkyl halides in the environment provided by a solution of dry ether in order to form a higher alkane along with a compound containing sodium and the halogen.
Kolbe's electrolysis: Kolbe's electrolysis method uses sodium salt of fatty acid to form the corresponding alkane as a product. In this reaction, the decarboxylation of the sodium salt of fatty acid takes place.
C - C bond is formed in wurtz and Kolbe's reaction.