why certain compounds are called hydrocarbons ? write the general formula for homologous series of alkanes, altenes and alkynes and also draw the strucuture of the first member of each series.
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Certain compounds are called hydrocarbons because they are a group of compounds which are made up of hydrogen and carbon. The general formula of homologous series alkynes is CnH2n−2. The first member of alkanes homologous series is methane. The first member of alkanes homologous series is ethane.
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Compounds which contain carbon and hydrogen are known as hydrocarbons.
eg:- Methane, ethane, benzene, cyclohexane.
General formula of:
1) Alkanes: CnH2n+2
2) Alkenes: CnH2n.
3)Alkynes:CnH2n-2.
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