Question

Homologous series(??? .EXPLAIN​

Answer 1

Answer:

Homologous series refers to a series of carbon compounds which have a different number of carbon atoms.

However, they contain the same functional group. In this series, a group of compounds share similar basic chemical makeup. Also, in such a series, the compounds show a difference in the number of iterations of a certain aspect of their structure.

A frequent reference occurs in organic chemistry to homologous series. Here, compounds can differ by the length of their carbon chain. Moreover, such differences can have a significant effect on the physical properties of the chemicals.

Answer 2

Homologous series:

★ A homologous series is a group of organic compounds having similar structure and chemical properties.

★ All members of Homologous series are represented by same General formula.

★ 2 adjacent members of a homologous series differ by CH₂ group.

For example, the First member of Alkane family is methane which has a formula of CH₄. The Second member is ethane having formula C₂H₆

When we see that the difference in the 2 formulas is CH₂

★ 2 adjacent members of homologous series differ by molecular mass of 14u.

For example

Atomic mass of CH₄ = At. mass of Carbon + 4(At. mass of Hydrogen)

⇒ Atomic mass of CH₄ = 12 + 4(1)

⇒ Atomic mass of CH₄ = 12 + 4

⇒ Atomic mass of CH₄ = 16u

Similarly,

Atomic mass of C₂H₆ = 2(At. mass of Carbon) + 6(At. mass of Hydrogen)

⇒ Atomic mass of C₂H₆ = 2(12) + 6(1)

⇒ Atomic mass of C₂H₆ = 24 + 6

⇒ Atomic mass of C₂H₆ = 30u

Now 30u - 16u = 14u