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A 3 L gas mixture of propane (C(3)H(8)) ...

A 3 L gas mixture of propane `(C_(3)H_(8))` and butane `(C_(4)H_(10))` on complete combustion at 25 C produced 10 L `CO_(2.)` Assuming constant P and T conditions what was volume of butane present in initial mixture?

Text Solution

Verified by Experts

`underset(x)(C_(3)H_(8))+5O_(2)rarr underset(3x)(3CO_(2))+4H_(2)O`
and `underset(3-x)(c_(4)H_(10))+(13)/(2)O_(2)rarr underset(4(3-x))(4CO_(2))+5H_(2)O.`
So, total volume of `CO_(2)` will be equal to
`3x+4(3-x)=12-x=10` litre
Now, Moles of `C_(3)H_(8)=2` moles and that of `C_(4)H_(10)=1` mole
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