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Empricial formula of a compound is CH(2)...

Empricial formula of a compound is `CH_(2)O` and its molecular mass is 90, the molecular formula of the compound is

A

`C_3H_6O_3`

B

`C_2H_4O_2`

C

`C_6H_12O_6`

D

`CH_2O`

Text Solution

Verified by Experts

The correct Answer is:
A
Emprical formula mass , `CH_2O = 12 + 2 + 16 = 30`
molecular mass = 90
n = molecular mass/emprical formula mass
` = 90/30 = 3`
molecular formula ` = (CH_2O)_3 = C_3H_6O_3` .
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