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The empirical formula of a compound is `CH_2O` and its vapour density is 30. The molecular formula of the compound is:
A. `C_3H_6O_3`
B. `C_2H_4O_2`
C. `CH_2O`
D. `C_2H_4O`

1 Answer

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Best answer
Correct Answer - B
`MW=2xxV.D.=2xx30=60`
`E.F.W=CH_2O=12+2+16=30`
`n=(M.W)/(E.F.W)=2`
Molecular formula `=C_2H_4O_2`

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