Benzene burns in oxygen according to the...

Benzene burns in oxygen according to the equation `2C_(6)H_(6(l))+15O_(2(g))rarr12CO_(2(g))+6H_(2)O_((l))`. How many litres of oxygen are required at STP for the complete combustion of 39g of liquid benzene?

A

`11.2`

B

`22.4`

C

42

D

84

Verified by Experts

The correct Answer is:

D

`39g=(1)/(2)` mole implies moles of `O_(2)=(15)/(4)`
implies volume = `(15)/(4)xx22.4=84`

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