Question

the empirical formula of ethane is CH2. if its molecule contains two atoms of carbon what will the molecular formula of ethane​

Answer 1

Answer:

Ratio of Carbon and hydrogen=1:2

Carbon atoms=2

Hydrogen atoms=?

By proportion:-

1:2::2:x

x=4

Number of hydrogen atoms=4

So molecular formula of ethane=C2H4

Note the compound should be ethene not ethane as ethane has formula C2H6.