Which of the following reaction can be used to prepare symmetrical alkanes?
Correct answer: B. Kolbe's reaction
- A. Reduction reaction
- B. Kolbe's reaction
- C. Clemmensen Reaction
- D. Hydrogenolysis
Explanation
OPTION A: Reduction reactions produce alkanes with unsymmetrical carbon chains, not symmetrical alkanes.OPTION B: Kolbe's Electrolysis Method: Electrolysis of an acid salt gives a symmetrical alkane.OPTION C: It is primarily used to reduce aldehydes and ketones to primary and secondary alcohols. The reduction of alkyl halides can lead to the formation of different alkanes with different carbon chain lengths, and not symmetrical alkanes.OPTION D: Hydrogenolysis can't be used to prepare symmetrical alkanes because it involves the breaking of C-C or C-heteroatom bonds and results in the formation of different alkanes with different chain lengths, not symmetrical alkanes.
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About Alkanes
Alkanes are saturated hydrocarbons containing only carbon-carbon and carbon-hydrogen single bonds, with the general formula CnH2n+2 for open chains. Their structure, isomerism, IUPAC nomenclature, physical properties, combustion, free-radical halogenation and conformations are covered, including the difference between substitution in alkanes and addition in unsaturated hydrocarbons.
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