At 300 K, 30 ml of Ethylene is subjected to combustion with 100 ml of Oxygen in a closed vessel. The reaction is highly exothermic. On cooling to 300 K, the volume of gases left in the vessel would be

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answer is 4.

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Detailed Solution

C2H4g30 ml+3O2g90 ml100 ml10 ml excess→2CO2g60 ml+2H2OlTotal volume of gases left = (10 + 60) ml = 70 ml

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