Question

Empirical formula of a compound X(molar mass = 78g/mol) CH. Write its molecular formula.
Please help.

Answer 1

We have,

Empirical formula = CH.

Empirical mass = 12 + 1 = 13.

We know,

Molar mass = k × empirical mass

=> 78 = k × 13

=> k = 6.

Hence, the compound is 6(CH) = C6H6.

Hence, the given compound has molecular formula C6H6 which is famous by the name Benzene.

Answer 2

48g/mol and empirical formula CH is = C6H6