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A gaseous hydrocarbon with empirical for...

A gaseous hydrocarbon with empirical formula `CH_(2)` has a density of 12.5 g `gL^(-1)` at N.T.P The molecular formula of the compound is

A

`C_2H_2`

B

`C_6H_6`

C

`C_2H_4`

D

`C_3H_6`

Text Solution

Verified by Experts

The correct Answer is:
C
22.4 L of a gas/ vapour at N.T.P has a mass of 1.25 g .
22.4 L of the gas at NTP has a mass of
`=1.25 xx 22.4 g = 28 g `
`therefore` Mol mass of hydrocarbon =28
`there " Hydrocarbon " =C_2H_4`
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