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प्रश्न
What are the products obtained by heating ethane in:
(a) Excess of air
(b) Absence of air
(c) Air in presence of copper and 120atm pressure
(d) Air with molybdenum oxide at 100 atm pressure.
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उत्तर
(a) Ethane reacts in excess of air to give carbon dioxide and water.
\[\ce{2C2H6 + 7O2 -> 4CO2 + 6H2O + Heat}\]
(b) Ethane reacts in absence of air to give carbon black.
\[\ce{C2H6 + O2 -> 2C + 3H2O}\]
(c) Ethane reacts in presence of copper and 120atm pressure to give
ethanol
\[\ce{2C2H6 + O2 ->[Cu][200°C] 2C2H5OH}\]
(d) Ethane reacts with molybdenum oxide at 100 atm pressure to
give ethanal.
\[\ce{C2H6 + O2 ->[MoO][\Delta] CH3CHO + H2O}\]
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\[\begin{array}{cc}
\phantom{.....................}\ce{H}\phantom{...}\ce{H}\phantom{....}\ce{O}\phantom{...............}\\
\phantom{...........}| \phantom{....}|\phantom{.} \phantom{..}//\phantom{......}\\
\ce{H-C-C-C}\\
\phantom{.......}| \phantom{....}|\phantom{..}\phantom{..}\text{\\} \phantom{..}\\
\phantom{...............}\ce{H}\phantom{...}\ce{H}\phantom{}\phantom{...}\ce{H}\phantom{.........}\
\end{array}\]
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