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प्रश्न
Define a homologous series. Give the name and structural formula of one homologue of the following:
CH3OH
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उत्तर
Homologous series: A series of organic compounds having similar structures and chemical properties and in which the successive compounds differ by -CH2 group is called a homologous series. A homologue of CH3OH will differ by the -CH2 group; therefore, methanol's successive homologue will be ethanol (C2H5OH).
The structural formula of ethanol is as follows:
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संबंधित प्रश्न
Write the next homologue of the following: C4H6
Write the molecular formula of first two members of homologous series having functional group −Br.
Give the structural formula for 1, 2-dichloroethane
Give the molecular formula of one homologue of each of the following:
C2H6
By how many carbon atoms and hydrogen atoms do any two adjacent homologues differ?
Propane and ethane are ______.
Succeeding members of a homologous series differ by ______.
Give the abbreviated formula of the third member of the alcohol.
What is a homologous series?
Haloalkanes react with alkalies to produce alcohol. Give the equation for the preparation of the second member of the homologous series of alcohol. State under what condition the reaction occurs.
The general formula of Alkane is _________________
Two statements are given - one labeled Assertion (A) and the other labeled Reason (R).
Assertion (A): In a homologous series of alcohols, the formula for the second member is C2H5OH and the third member is C3H7OH.
Reason (R): The difference between the molecular masses of the two consecutive members of a homologous series is 144.
The unsaturated hydrocarbons containing a carbon-carbon double bond are called _______.
The phenomenon in which compounds having different structural formulae have the same molecular formula is called _______.
The general molecular formula for the homologous series of alkynes is _______.
As one ascends in any homologous series, physical properties change gradually.
Write a short note.
Homologous series
Which of the following does not belong to the same homologous series?
The first member of alkyne homologous series is
Consider the carbon compounds having following molecular formula:
(i) C3H6 (ii) C3H8 (iii) C4H6 (iv) C6H6 (v) C6H12
- State the number of double covalent bonds present in C3H8.
- Write the formula of first member of the homologous series to which the carbon compound C4H6 belongs.
- Which one of the above compounds forms a ring structure of carbon atoms?
- Identify, which of the above compounds, is a member of alkane series.
