Question

Write the molecular formula of the first two members of the homologous series having functional group – OH.

Answer 1

Methanol and ethanol

this must be your answer I think

thanks ..

Answer 2

The molecular formula of the first two members of the homologous series having a functional group -OH is CH3OH and C2H5OH.

• The -OH group is the alcohol group.
• The physical properties of methanol and ethanol differ minutely as the molecular mass increases in successive series.
• The two have the same functional group.
• The chemical properties are nearly the same.
• There is a difference of CH2 in the molecular formula of methanol and ethanol.

Hence, the molecular formula of the first two members of the homologous series having a functional group -OH is CH3OH and C2H5OH.