1.

Empirical formula of a compound is CH_2O.Its molecular mass is 60. The molecular formula will be

Answer»

`CH_2O`
`C_2H_4O_2`
`C_3H_6O_3`
none of these

SOLUTION :Empirical formula= `CH_2O`
Empirical formula mass ` = 1 xx 12 + 2 xx 1 + 16 = 30`
MOLECULAR mass = 60
n FACTOR = molecular mass/empirical formula mass
` = 60/30=2 `
molecular formula ` = (EF)_2`
` = (CH_2O)_2`
` = C_2H_4O_2`


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