Q.

At 300 K, 10 ml of Ethylene is subjected to combustion with 40 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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a

20ml

b

30ml

c

40ml

d

10ml

answer is B.

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Detailed Solution

C2H4g +3O2g→2CO2g +2H2Ol ;  10 ml          30 ml      20 ml                       40 ml Volume of gases after the reaction :  10 ml (excess O2)+20 ml ( CO2 formed)
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At 300 K, 10 ml of Ethylene is subjected to combustion with 40 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