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प्रश्न
Give the names and the structural formula of the first three members of the homologous series of alkanes.
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उत्तर
| Sr. No. | Members | Structural formula |
| 1. | Methane | \[\begin{array}{cc} \ce{H}\\ |\\ \ce{H - C - H}\\ |\\ \ce{H}\\ \end{array}\] |
| 2. | Ethane | \[\begin{array}{cc} \ce{H}\phantom{...}\ce{H}\\ |\phantom{....}|\\ \ce{H - C - C - H}\\ |\phantom{....}|\\ \ce{H}\phantom{...}\ce{H}\\ \end{array}\] |
| 3. | Propane | \[\begin{array}{cc} \ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ |\phantom{....}|\phantom{....}|\\ \ce{H - C - C - C - H}\\ |\phantom{....}|\phantom{....}|\\ \ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ \end{array}\] |
संबंधित प्रश्न
What is meant by homologous series of carbon compounds?
Write the molecular formula of the 2nd and 3rd member of the homologous series where the first member is ethyne.
What is a homologous series? Explain with an example.
An organic compound having the molecular formula C3H6O can exist in the form of two isomers A and B having different functional groups. The isomer A is a liquid which is used as a solvent for nail polish. The isomer B is also a liquid. An aqueous solution of one of the lower homologues of B is used for preserving biological specimens in the laboratory
(a) What is compound A?
(b) Write the electron-dot structure of A.
(c) What is compound B?
(d) Write the electron-dot structure of B.
(e) Name the lower homologue of compound B which is used in preserving biological specimens.
Write the name and molecular formula of the first member of the homologous series of alkynes.
Define homologous series of organic compounds. List its two characteristics. Write the name and formula of the first member of the series of alkenes.
While going in an increasing order there is a rise in the molecular mass of the consecutive members of the homologous series by _______.
Find the odd one out and give its explanation.
Complete the following chart by using examples given in brackets.
(isobutylene, cyclohexane, propane, cyclohexene, cyclopentane, benzene, propyne, isobutane, propene)
| Straight chain hydrocarbons | Branched chain hydrocarbons | Cyclic hydrocarbons |
What is called homologous series? Give any three of its characteristics?
