Liquid benzene (C(6)H(6)) burns in oxyge...

Liquid benzene `(C_(6)H_(6))` burns in oxygen according to `2C_(6)H_(6)(l)+15O_(2)(g)rarr12CO_(2)(g)+6H_(2)O(g)` How many litres of `O_(2)` at STP are needed for complete combustion of 39 gm of liquid benzene?

11.2 litres

74 litres

84 litres

22.4 litres.

Text Solution

Verified by Experts

The correct Answer is:

`2C_(6) H_6 +15O_2 rarr 12 CO_2 +6H_2O`
`2xx 78 "gm" implies 15xx22.4 ` litre of `O_2` at STP , `39 implies (15 xx22.4xx39)/(2xx78) = 84 ` litre

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