What is a homologous series of carbon compounds?

Academic Chemistry NCERT Class 10

Homologous series refers to the series representing a family of compounds in increasing order having the same functional group, and the successive members differ by CH₂ unit or 14 mass unit: for example, the homologous series of alcohols are given below:-

Methanol (CH₃OH)

Ethanol (CH₃CH₂OH)

Propanol (CH₃CH₂CH₂OH)

Butanol (CH₃CH₂CH₂CH₂OH)

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Updated on: 10-Oct-2022

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What is a homologous series of carbon compounds? Give an example and list its three characteristics.
(a) Give the general name of the class of compounds having the general formula CnH2n-2 Write the name of the first member of this homologous series.(b) The general formula of a homologous series of carbon compounds is CnH2n. Write the molecular formula 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 CnH2n+2.
What is a homologous series? Explain with an example.
What is saturated and unsaturated carbon compounds?
(a) What is 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 ,C3H4 ,C2H6 ,C4H10, C3H4, C3H6 . (e) What is meant by 'heteroatom'? Give examples. Write the names and formulae of two organic compounds containing different heteroatoms.
(a) Define a homologous series. Give the name and structural formula of one homologue of the following: CH3OH.(b) Write the molecular formula of the third member of the homologous series of carbon compounds with general formula CnH2n+ 1OH. (c) Name any two fossil fuels.
Chemical properties of Carbon Compounds
Which of the following statements are correct for carbon compounds?(i) Most carbon compounds are good conductors of electricity (ii) Most carbon compounds are poor conductors of electricity.(iii) Force of attraction between molecules of carbon compounds is not very strong. (iv) Force of attraction between molecules carbon compounds is very strong.
(a) What is the general name of all the compounds made up of carbon and hydrogen?(b) Why does carbon form compounds mainly by covalent bonding?
C3H8 belongs to the homologous series of
The first member of the alkyne homologous series is propyneethynemethaneethene
Why does carbon atom forms a large of compounds?
What are the two properties of carbon which lead to the formation of a large number of carbon compounds?
(i) What is a functional group?(ii) State two properties of carbon which lead to huge number of carbon compounds we see around us.
The first member of the alkyne homologous series isethyneethenepropynemethane

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