A) \[C{{H}_{3}}C{{H}_{2}}N{{O}_{2}}\]
B) \[C{{H}_{3}}C{{H}_{2}}N{{O}_{2}}+C{{H}_{3}}N{{O}_{2}}\]
C) \[2C{{H}_{3}}N{{O}_{2}}\]
D) \[C{{H}_{2}}=C{{H}_{2}}\]
Correct Answer: B
Solution :
Under certain conditions, alkanes react with \[HN{{O}_{3}}\], a hydrogen atom being replaced by a nitro group \[(N{{O}_{2}})\]. This process is known as nitration. Nitration of alkane may be carried out in the vapour phase between \[{{150}^{o}}\] to \[{{475}^{o}}C\]. Whereupon a mixture of mono nitro alkanes is obtained Example Ethane give a mixture of nitroethane and nitromethane \[\underset{ethane}{\mathop{C{{H}_{3}}-C{{H}_{3}}+HN{{O}_{3}}\xrightarrow[-{{H}_{2}}O]{673K}}}\,\] \[\underset{\begin{smallmatrix} nitro\,\,ethane \\ (major) \end{smallmatrix}}{\mathop{C{{H}_{3}}-C{{H}_{2}}-N{{O}_{2}}}}\,+\underset{(\text{minor})}{\mathop{C{{H}_{3}}N{{O}_{2}}}}\,\] During nitration chain fission of alkanes also takes place, so \[C{{H}_{3}}N{{O}_{2}}\] is also obtained along with \[C{{H}_{3}}C{{H}_{2}}N{{O}_{2}}\]
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