A) butane
B) ethane
C) propane
D) A mixture of the above three
Correct Answer: D
Solution :
Methyl iodide and ethyl iodide, on treatment with sodium in ethereal solution, give a mixture of propane, ethane and butane, as follows \[C{{H}_{3}}-C{{H}_{2}}C{{H}_{3}}\xrightarrow{ether}\] \[\underset{\text{propane}}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{3}}}}\,+2Nal\] \[C{{H}_{3}}I+2Na+I-C{{H}_{3}}\xrightarrow{{}}\underset{\text{ethane}}{\mathop{C{{H}_{3}}-C{{H}_{3}}}}\,+2NaI\] \[{{C}_{5}}{{H}_{5}}I+2Na+I-{{C}_{2}}{{H}_{5}}\xrightarrow{{}}\] \[\underset{\text{butane}}{\mathop{{{C}_{2}}{{H}_{5}}{{C}_{2}}{{H}_{5}}}}\,+2NaI.\]
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