Which of the following reactions is an example of a Wurtz reaction?
A. CH3Cl + KOH(aq) -> CH3OH + KCl
B. 2CH3Cl + Zn -> C2H6 + ZnCl2
C. CH3Cl + Na -> C2H6 + NaCl
D. CH3Cl + KOH(alc) -> CH4 + KCl
Answer: Option C
Solution (By JKSSB Mock Tests)
The Wurtz reaction involves the reaction of an alkyl halide with sodium metal in dry ether to form a higher alkane. For example, two molecules of methyl chloride react with two sodium atoms to form ethane (C2H6) and sodium chloride. It is primarily used to synthesize symmetrical alkanes with an even number of carbon atoms.
Explanation:
Thermite: Fe₂O₃ + 2Al → 2Fe + Al₂O₃. Aluminium powder reduces iron oxide, producing molten iron for welding. Al is chosen due to its high reactivity and exothermic reaction.
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