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Question

What volume of oxygen would be required for the complete combustion of 100 litres of ethane? The following equation is as follows:

2C2H6+7O24CO2+6H2O


A

350 litres

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B

261 litres

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C

580 litres

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D

447 litres

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Solution

The correct option is A

350 litres


2C2H6(g)2 vol.+7O2(g)5 vol.4CO2(g)4 vol.+6H2O(g)6 vol.

By Gay Lussac’s law:

2 vol. of ethane require for complete combustion = 7 vol. of oxygen.

100 litres of ethane will require for complete combustion = 72×100 = 350 litres of oxygen.

Hence, the required volume of oxygen is 350 litres.


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