The following compound which cannot be prepared by Wurtz reaction?
A
Methane
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B
Ethane
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C
Butane
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D
Propane
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Solution
The correct option is A Methane Methane cannot be prepared by Wurtz reaction. In wurtz reaction, two molecules of alkyl halides combine (on heating with sodium metal in presence of dry ether as solvent) to produce higher alkanes containing even number of carbon atoms.
CH3−I+2Na+I−CH3 dry ether−−−−−→ΔCH3−CH3+2NaI
Methane cannot be prepared by Wurtz reaction.
A mixture of two different alkyl halides on heating with sodium will give three different alkanes.