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3 L mixture of propane and butane on com...

3 L mixture of propane and butane on complete combustion at 298 K gave 10 L `CO_2` Calculate the compostion of the gas mixture.

A

`66.66%, 33.33%`

B

`33.33%, 66.66%`

C

`50%, 50%`

D

`60%, 40%`

Text Solution

Verified by Experts

The correct Answer is:
A
`C_(3)H_(8)+5O_(2)rarr3CO_(2)+4H_(2)O`
`_(4)H_(10)+(13)/(2)O_(2)rarr 2CO_(2)+5H_(2)O`
Let volume of `C_(3)H_(8)="x lit"`
`"Volume of "C_(4)H_(10)=(3-x)" lit"`
`therefore" Volume of "CO_(2)=3x+4(3-x)=10`
`therefore 3x+12-4x-10`
`therefore x=2`
`therefore" Volume of "C_(3)H_(8)="2 lit"`
`"Volume of "C_(4)H_(10)="1 lit"`
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