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When a certain amount of ethylene was co...

When a certain amount of ethylene was combusted, 6226 kJ heat was evolved. If heat of combustion of ethylene is 1411 kJ, the volume of `O_(2)` (at STP) that entered into the reaction is :

A

296.5 mL

B

296.5 litre

C

`6226 xx 22.4` litre

D

22.4 litre

Text Solution

Verified by Experts

The correct Answer is:
B
`CH_(2) = CH_(2) + 3O_(2) rarr 2CO_(2) + 2H_(2)O`
1411 kJ Heat is released with = 3 mole of `O_(2)`
6226 kJ Heat released with =` 3/(1411) xx 6226 = 13.23 "mole of" O_(2)`
`pv = nRT`
`v = 13.23 xx 0.021 xx 273`
`v = 296.5 "lt"`.
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