Define homologous series?

Define homologous series?

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Answers (5)

1 month ago
In the field of organic chemistry, a
homologous series is a sequence of
compounds with the same functional
group and similar chemical properties
in which the members of the series can
be branched or unbranched.
1 month ago
The alkanes, alkenes and
cycloalkanes are examples of
homologous series. A homologous
series is a group of chemicals
which have similar chemical
properties and can be represented
by a general formula.
1 month ago
Homologous series is a series
of compounds with similar
chemical properties and same
functional group differing
from the successive member
by CH . Carbon chains of
varying length have been
observed in organic
compounds having the same
general formula. Such organic
compounds that vary from
one another by a repeating
unit and have the same
general formula form a series
of compounds. Alkanes with
general formula C H ,
alkenes with general formula
C H and alkynes with
general formula C H form
the most basic homologous
series in organic chemistry.
Homologous series chart
Examples of Homologous
The successive members vary
from each other by a CH unit.
For example in CH and C H ,
the difference is -CH unit and
the difference between C H
and C H is also -CH unit. So
CH , C H , and C H are
homologs. The same thing can
be observed in case of alkenes
in which the first member is
ethene and the successive
members are C H C H and
C H . They differ from each
other by a –CH unit. Alkene
formula is written as C H .
All the members belonging to
this series have the same
functional groups. They have
similar physical properties
that follow a fixed gradation
with increasing mass. The
properties of CH OH, C H OH,
and C H OH are similar and
follow a gradual change with
increasing molecular mass of
the successive members of the
series. This is because, with
the increase in the molecular
mass of the compounds, the
number of bonds also
increases. Therefore,
properties such as melting
and boiling point, solubility,
etc. that depend on the mass
and the total number of
bonds in a compound show a
gradual change with an
increase in molecular masses
of the compounds. Chemical
properties of the members of
a homologous series are the
same due to the fact that they
all have the same functional
groups in them.
1 month ago
Homologous series is define as a series of organic compound which belong to thesame group or family , having thesame chemical characteristics and each member in a family differs with a functional group -CH2
1 month ago
Homologous series is a family of hydrocarbon which follows a regular structural pattern, in which each successive member differs in its molecular formular by a -CH2 - group .
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