Question

4th member of homologous series of alkyne

Answer 1

Butyne is the 4th member of homologous series of alkyne.

Explanation:

• The unsaturated hydrocarbon which has triple bonds in its structure is called as alkynes.
• The general formula for alkyne is $C_nH_{2n-2}$.
• To find the 4th member of homologous series, consider n = 4. Accordingly

4th member of homologous series of alkyne = $C_nH_{2n-2}$

4th member of homologous series of alkyne = $C_4H_{2(4)-2}$

4th member of homologous series of alkyne = $C_4H_{8-2}$

4th member of homologous series of alkyne = $C_4H_{6}$

• The name of the obtained formula $C_4H_6$ is Butyne. Thus it is the 4th member of homologous series of alkyne.

Learn more about such concept

Write the molecular formula of an alkyne containing 10 atoms of hydrogen.

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Name the second member of alkyne series and give its structure

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Answer 2

Answer:C5H8

Explanation:First member of alkyne series is C2H2 becuz If n is 1 then first member would be CH which is not possible.