Question

Which of the following is not observed in a homologous series? Give reason for your choice.

a) Change in chemical properties and 14u
b) Difference in -CH 2 molecular mass
c) Gradation in physical properties
d) Same functional group​

Answer 1

Answer:

a) Change in chemical properties It does not occur due to the presence of the same functional group.

Answer 2

Answer:

The correct option is a) Change in chemical properties.

Explanation:

• The homologous series is a group or collection of compounds that are similar in their structure or have the same functional group.
• The physical properties such as boiling point, melting point, etc. changes as the consecutive members of the series differ by the molecular formula -CH2 and a molecular mass of 14u.
• However, the chemical properties do not changes as they share the same functional group and hence have similar chemical properties.  

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