Chemistry
Write a balanced equation for :
(i) Burning of ethane in plentiful supply of air.
(ii) Action of water on calcium carbide.
(iii) Heating of ethanol at 170°C in the presence of conc. sulphuric acid.
Organic Chemistry
ICSE 2016
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Answer
(i) Carbon dioxide and water are produced:
2\text{H}6 + 7\text{O}2[\text{excess}] \longrightarrow 4\text{CO}2 + 6\text{H}_2\text{O} + \Delta
(ii) Calcium hydroxide and ethyne are produced
2} + \underset{\text{water}}{2\text{H}2\text{O}} \longrightarrow \underset{\text{ethyne [acetylene]}}{\text{C}2\text{H}2} + \text{Ca(OH)}_2
(iii) Ethene and water are produced
2\text{H}5\text{OH}} \xrightarrow[170\degree\text{C}]{\text{Conc. H}2\text{SO}4\text{[excess]}} \underset{ \text{ethene}}{\text{C}2\text{H}4} + \text{H}_2\text{O}\
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