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Question
Write the molecular formula of first two members of homologous series having functional group −Br.
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Solution
The general formula for the homologous series of functional group −Br is CnH2n+1Br.
The two consecutive members of this series are:
a. CH3Br(Bromomethane)
b. CH3CH2Br (Bromoethane)
where n is 1 and 2 respectively
The molecular formula for both of them are CH3Br and C2H5Br.
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RELATED QUESTIONS
Classify the following carbon compounds into two homologous series and name them.
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Write the name and formula of the 2nd member of homologous series having general formula CnH2n.
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(1) in terms of molecular mass?
(2) in terms of number and kind of atoms per molecule?
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(a) four
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(c) six
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Copy and complete the following table, which relates to the three homologous series of hydrocarbons:
| General formula | CnH2n | CnH2n-2 | CnH2n+2 |
| IUPAC name of the homologus series | |||
| Characteristic bond type | Single bonds | ||
| IUPAC name of the first member of the series | |||
| Type of reaction with chlorine | Addition |
Successive members of a homologous series vary by how many atomic mass unit?
The first member of alkyne homologous series is
Name the following:
Group of organic compounds where the successive members follow a regular structural pattern, successive compounds differ by a 'CH2' group.
