Which of the following hydrocarbons undergo addition reactions :
C2H6, C3H8, C3H6, C2H2, and CH4
Addition reactions take place only in unsaturated hydrocarbons. So addition reaction takes place only in C3H6 and C2H2.
[Extra information: Homologous series is a group of organic compounds having similar structures and similar chemical properties in which the successive compounds differ by CH2 group.
Example: All the alkanes have similar structures with single covalent bonds and show similar chemical properties, so they can be grouped together in the form of a homologous series.
Certain compounds contain only carbon and hydrogen. Hence, these organic compounds are called hydrocarbons.The hydrocarbons which are members of the same homologous series are:
Alkanes: C3H8, C4H10
Alkenes: C5H10, C8H16
Alkynes: C6H10, C7H12
Characteristics of a homologous series are given below:
(i) All the members of the homologous series can be represented by the same general formula.
(ii) Any two adjacent homologues differ by 1 carbon atom and 2 hydrogen atoms in their molecular formulae.
(iii) The difference in the molecular masses of any two adjacent homologues is 14 u.]
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- Which of the following will undergo addition reactions?
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- Calculate the molecular masses of the following compounds:(a) Methane, CH4(b) Ethane, C2H6(c) Ethene, C2H4(d) Ethyne, C2H2(Atomic masses = C= 12u , H= 1u)
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- Calculate the molecular masses of H2, O2, Cl2, C02, CH4, C2H2, NH3, CH3OH.
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- Which of the following can have a triple bond?C2H4 ; C3H4 ; C3H6
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