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 \[C{{H}_{3}}-C{{H}_{2}}C{{H}_{3}}\] \[\xrightarrow{ether}\underset{propane}{\mathop{C{{H}_{3}}.C{{H}_{2}}C{{H}_{3}}+2NaI}}\,\] \[C{{H}_{3}}I+2Na+I-C{{H}_{3}}\xrightarrow{{}}\] \[\underset{ethane}{\mathop{C{{H}_{3}}-C{{H}_{3}}+NaI}}\,\] \[{{C}_{2}}{{H}_{5}}I+2Na+I-{{C}_{2}}{{H}_{5}}\xrightarrow{{}}\] \[\underset{\text{butane}}{\mathop{{{C}_{2}}{{H}_{5}}.{{C}_{2}}{{H}_{5}}+2NaI}}\,\]
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