Question

What is Homologous series. Give one example.

Answer 1

Hey!!✌

Homologous series is the  successive series of carbon compounds which differ from the CH2 group having the same chemical properties and same functional group and which belongs to the same family.

example
butane -- C4H10
pentane -- C5H12
hexane -- C6H14

These two will differ from CH2  group and they belong to alkane family and are successive carbon compounds

There homologous series of carbon compounds will differ from 14 amu because molar mass of CH2 is 14.

Answer 2

Answer:

• A homologous series is a series of compounds, which has the same functional group.
• This also contains similar general formula and chemical properties. Since there is a change in the physical properties, we can say that there would be an increase in the molecular size and mass.

Examples:-

Methane, ethane, propane, butane, etc. are all part of the alkane homologous series.

The general formula of this series is CnH2n+2.

• Methane CH4
• Ethane CH3CH3
• Propane CH3CH2CH3
• Butane CH3CH2CH2CH3.

It can be noticed that there is a difference of −CH2 unit between each successive compound.