Question

empirical formula of a compound is CH and its molecular mass is 78. find its molecular formula. ( atomic masses H = 1, C = 12)​

Answer 1

Answer:

The empirical formula of a compound gives us the lowest whole number ratio of that particular compound.

The empirical formula of a compound gives us the lowest whole number ratio of that particular compound. Empirical formula weight=12+1=13

The empirical formula of a compound gives us the lowest whole number ratio of that particular compound. Empirical formula weight=12+1=13Molecular weight=78

n=Molecular weight/empirical formula weight

=78/12 =6

Molecular formula=(CH)n =(CH)6 =C6H6

HOPE THIS WILL HELP YOU

Answer 2

Answer:

since its empirical formula is CH the compound will be of form (CH)y or we can say CyHy .

its molecular mass will be

y × (mass of carbon) + y × ( mass of hydrogen) = 78

y × 12 + y × 1 = 78

13 × y =78

y = 78/13

y=6

thus its molecular formula is C6H6