Question

# What are the products obtained by heating ethane in: (a) excess of air (b) absence of air (c) air in presence of copper and 120 atm pressure. (d) air with molybdenum oxide at 100 atm pressure.

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## The products obtained by heating ethane in: (a) excess of air: We get carbon dioxide and water - $2{\mathrm{C}}_{2}{\mathrm{H}}_{6}+\underset{\mathrm{excess}}{7{\mathrm{O}}_{2}}\to 4{\mathrm{CO}}_{2}+6{\mathrm{H}}_{2}\mathrm{O}+\mathrm{Heat}$ (b) absence of air: Ethene and hydrogen gas are obtained - ${\mathrm{CH}}_{3}-{\mathrm{CH}}_{3}\stackrel{\mathrm{Heat}}{\to }{\mathrm{H}}_{2}\mathrm{C}={\mathrm{CH}}_{2}+{\mathrm{H}}_{2}$ (c) air in presence of copper and 120 atm pressure: We get ethanol - $2{\mathrm{C}}_{2}{\mathrm{H}}_{6}+{\mathrm{O}}_{2}\underset{120\mathrm{atm}}{\overset{\mathrm{Cu}}{\to }}2{\mathrm{C}}_{2}{\mathrm{H}}_{5}\mathrm{OH}$ (d) air with molybdenum oxide at 100 atm pressure: Ethanal (acetaldehyde) is obtained - ${\mathrm{C}}_{2}{\mathrm{H}}_{6}+{\mathrm{O}}_{2}\underset{100\mathrm{atm}}{\overset{\mathrm{MoO}}{\to }}{\mathrm{CH}}_{3}\mathrm{CHO}+{\mathrm{H}}_{2}\mathrm{O}$

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