Q. Which of the following is/are correct for homologous series?
- The melting point increases as we go down in a series.
- It is a series with different functional groups.
Select the correct answer from the codes given below:
Answer:
Only 1
Notes: A homologous series is a series of compounds with the same functional group and similar chemical properties in which the members of the series can be branched or unbranched. As the molecular mass increases in any homologous series, a gradation in physical properties is seen. This is because the melting and boiling points increase with increasing molecular mass. Other physical properties such as solubility in a particular solvent also show a similar gradation. But the chemical properties, which are determined solely by the functional group, remain similar in a homologous series.