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What is the molecular formula of a compo...

What is the molecular formula of a compound, its empirical formula is `CH_2O` and its molecular weight is 90?

A

`C_3H_6O_3`

B

`C_6H_6O_3`

C

`C_4H_8O_4`

D

`C_2H_6O_2`

Text Solution

Verified by Experts

The correct Answer is:
A
Empirical formula `=CH_2O`, Molecular weight = 90
Empirical formula weight of `CH_2O = 12+(1xx2)+16=30 `
`n =("molecular weight")/("empirical formula weight")=(90)/30 = 3 " " :. ` molecular formula `=(CH_2O)_3 =C_3H_6O_3`
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