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A gaseous hydrocarbon has 85% carbon and...

A gaseous hydrocarbon has 85% carbon and vapour density of 28. The possible formula of the hydrocarbon will be

A

`C_(6) H_(3)`

B

`C_(2)H_(8)`

C

`C_(2)H_(2)`

D

`C_(4)H_(8)`

Text Solution

Verified by Experts

The correct Answer is:
D

Empirical formula is `CH_(2)`
Mol. Mass `=2xxVD=2xx28=56`
`n=("Mol. Formula mass ")/("Emp . Formula mass")=(56)/(14)=4`
Hence mol. Formula `=(CH_(2))_(n)=(CH_(2))_(4)=C_(4)H_(8)`
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