Question

Empirical formula of a substance is ch2o. Molar mass is 180. What is the molecular formula

Answer 1

Answer:The empirical formula of the compound is CH2O, which has two numbers of atoms of hydrogen, and one atom of oxygen for each carbon. The mass of CH2O = 12+2*1+16 = 30. The approximate molecular weight of the compound is 180. So, the molecular formula of the given compound is C6H12O6.

Answer 2

Given: Empirical formula of a substance is $CH_2O$ and molar mass is 180.

To find: We have to find its molecular formula.

Solution:

The molecular formula of the compound can be determined as follows-

The empirical formula of a substance is $CH_2O$.

The atomic mass of C is 12.

The atomic mass of H is 1 and the atomic mass of oxygen is 16.

Thus the molecular mass of $CH_2O$ is 12+1×2+16=30.

Thus n value will be-

180/30=6.

Thus the molecular formula of the compound is $(CH_2O)×6$ or $C_6H_{12}O_6$.