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One of the reactions used in the petrole...

One of the reactions used in the petroleum industry for improving octance number of fuels is
`C_(7) H_(14) rarr C_(7)H_(8) + 3H_(2)`
The two hydrocarbons `C_(7) H_(14)` and `C_(7)H_(8)` are liquid, `H_(2)` formed is gas. Whatis the percentage reduction in liquid weight accompanying the completion of the above reaction?

A

`~~ 1%`

B

`~~ 3%`

C

`~~ 5%`

D

`~~ 6%`

Text Solution

Verified by Experts

The correct Answer is:
D
Ratio `= (1 "mol" C_(7) H_(8) (92.0 g//"mol"))/(1 "mol" C_(7)H_(17) (98.0 g//"mol")) = 0.939`
% reduction `= ((1 - 0.939)/(1)) xx 100 = 6.1%`
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