What is meant by homologous series of carbon compounds ? Classify the following carbon compounds into 2 homologous series and name them.
C3H2, C3H6, C4H6, C4H8, C5H8, C5H10

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Solution

Hi,

A homologous series is a series of organic compounds which belong to the same family (i.e. possess same functional group) and show similar chemical properties. The members of this series are called homologue and differ from each other by the number of CH₂ units in the main carbon chain.

Formula Name of the molecule

C₃H₄ Propyne

C₄H₆ Butyne

C₅H₈ Pentyne

Formula Name of the molecule

C₃H₆ Propene

C₄H₈ Butene

C₅H₁₀ Pentene

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Similar questions

C_{3} H_{6}, C_{4} H_{8}

and

C_{5} H_{10}

belong to the same homologous series. Define homologous series.

C_{3} H_{6}, C_{4} H_{8}

and

C_{5} H_{10}

belong to the same homologous series. The melting and boiling points of

C_{5} H_{10}

are higher than that of

C_{4} H_{8}

(a) What is a homologous series? Explain with an example.
(b) State two characteristics of a homologous series.
(c) The molecular formula of an organic compound is C₁₈H₃₆. Name its homologous series.
(d) Select the hydrocarbons which belong to the same homologous series. Give the name of each series.
CH₄, C₂H₂, C₂H₄, C₂H₆, C₄H₁₀, C₃H₄, C₃H₆
(e) What is meant by 'heteroatom'? Give examples. Write the names and formulae of two organic compounds containing different heteroatoms.

Q. Assertion :The ability of carbon to form chains gives rise to a homologous series of compounds. Reason: Homologous series is a series of compounds with the same general formula, usually varying by a single parameter such as the length of a carbon chain

(a) Give the general name of the class of compounds having the general formula $C_{n} H_{2 n - 2} .$ Write the name of the first member of this homologous series.
(b) The general formula of a homologous series of carbon compounds is $C_{n} H_{2 n} .$ Write the molecular formulae of the second and fourth members of the series.
(c) Write the molecular formulae of the third and fifth members of homologous series of carbon compounds represented by the general formula $C_{n} H_{2 n + 2}$

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Formula	Name of the molecule
C₃H₄	Propyne
C₄H₆	Butyne
C₅H₈	Pentyne

Formula	Name of the molecule
C₃H₆	Propene
C₄H₈	Butene
C₅H₁₀	Pentene

What is meant by homologous series of carbon compounds ? Classify the following carbon compounds into 2 homologous series and name them. C3H2, C3H6, C4H6, C4H8, C5H8, C5H10

What is meant by homologous series of carbon compounds ? Classify the following carbon compounds into 2 homologous series and name them.
C3H2, C3H6, C4H6, C4H8, C5H8, C5H10