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An organic compound has an empirical for...

An organic compound has an empirical formula `(CH_(2)O)` Its vapour density is 45. The molecular formula of the compound is

A

`CH_(2)O`

B

`C_(2) H_(5) O`

C

`C_(2) H_(2) O`

D

`C_(3) H_(6) O_(3)`

Text Solution

Verified by Experts

The correct Answer is:
D
Mol.wt. ` 2 xx 1` vapour density
` = 2 xx 45 = 90`
Empirical formula weight = 12 + 2 + 16
= 30
`:. n = ("mol . wt.")/("empirical formula wt.")`
` = (90)/( 30) = 3 `
`:.` Molecular formula of the compound
`= (CH_(2) O)_(3) = C_(3) H_(6) O_(3)`
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