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प्रश्न
Write the molecular formula of first two members of homologous series having functional group −Br.
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उत्तर
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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संबंधित प्रश्न
Write the molecular formula of first two members of homologous series having functional group – OH
Complete the following table which relates to the homologous series of hydrocarbons.
|
General Formula |
IUPAC name of the homologous series | Characteristic bond type | IUPAC name of the first member of the series |
| `C_nH_(2n-2)` | (A)________ | (B)______ | (C)______ |
| C_nH_(2n+1) | (B)________ | (E)______ | (F)______ |
Give the abbreviated formula of the third member of the alcohol.
Give the names and the structural formula of the first three members of the homologous series of alkanes.
Why homologous series of carbon compounds are so called? Write chemical formula of two consecutive members of a homologous series and state the part of these compounds that determines their (i) physical properties, and (ii) chemical properties.
Study the different conclusions drawn by students of a class on the basis of observations of preserved/available specimens of plants and animals.
I. Potato and sweet potato are analogous organs in plants.
II. Wings of insects and wings of birds are homologous organs in animals.
III. Wings of insects and wings of bats are analogous organs in animals.
IV. Thorns of citrus and tendrils of cucurbita are analogous organs in plants.
The correct conclusions are:
(A) I, and II
(B) II and IV
(C) I and III
(D) III and IV
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 general molecular formula for the homologous series of alkynes is _______.
Name the following organic compound:
The first homologue whose general formula is CnH2n.
