Question

In an organic compound, C = 40% H=6.6% and rest is oxygen. If the VD of organic
compound is 30 what is its molecular formula​

Answer 1

Explanation:

Percentage oxygen = 100- ( 40+ 6.66)= 100 - 46.6 = 53.4%

Hence, empirical formula = CH

2

O

Now, empirical formula mass

=12+(2×1)+16=12+2+16=30

Molecular mass of given organic compound = vapor density x 2 = 30 x 2 = 60

n = Molecular mass / Empirical formula mass =

30

60

=2

Thus , Molecular formula = (Empirical formula) ×n=(CH

2

O)×2=

C2H4O2