Calculated the difference in the formulae and molecular masses for
(a) `CH_3OH and C_2H_5OH`
(b) `C_2H_5OH` and `C_3H_7OH` and
(c) `C_3H_7OH` and `C_4H_9OH`
• Is there any similarity in these three ?
• Arrange these alcohols in the order of increasing carbon atoms to get a family . Can we call this family a homologous series ?

Explanation

The difference in the molecular formulae is `-CH_2` i.e., 14 amu. All the three show the same difference. The increasing order in terms of a carbon atoms is `CH_3OH, C_2H_5OH, C_3H_7OH` and `C_4H_9OH`. Yes, we we can call this as homologous series.