Question

A certain hydrocarbon has the following percentage composition C=83.73%, H=16.27%. The vapour density of the compound was found to be 42. [At. wt. of C=12, H=1] Find the molecular formula of the compound.​

Answer 1

Answer:

As we know,

Molar mass =2×vapour density

Molar mass of X =2×29=58gm

Mass of C =82.8×

100

58

=48gm

Mass of H =10gm

So, compound contains 4 C atoms and 10 H atoms and compound is C

4

H10.