Calculated the difference in the formulae andmolecular 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 ?

Calculated the difference in the formulae andmolecular masses for (a)

1.	Calculated the difference in the formulae andmolecular 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 ?
Answer» Solution :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.