मराठी

Write the Molecular Formula of the First Two Members of the Homologous Series Having Functional Group

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प्रश्न

Write the molecular formula of the first two members of the homologous series having functional group  .

 

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उत्तर

i. Propanone

ii. Butanone
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2016-2017 (March) Foreign Set 3

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संबंधित प्रश्‍न

Write the name and formula of the 2nd member of homologous series having general formula CnH2n.


Write the name and formula of the 2nd member of homologous series having general formula CnH2n – 2.


Give the structural formula for 1, 2-dichloroethane


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)______

Write the molecular formula of the third member of the homologous series of carbon compounds with general formula CnHO2n+1OH.


As one ascends in any homologous series, physical properties change gradually.


Complete the following table for homologous series of Alkenes.

Name Molecular formula Condensed structural formula Number of carbon atom Number of -CH2- units Boiling point °C
Ethene C2H4 CH2 = CH2 2 0 -102
Propene C3H6 CH3–CH = CH2 3 1 -48
1-Butene C4H8 CH3–CH2–CH = CH2 ______ ______ -6.5
1-Pentene C5H10 CH3–CH2–CH2–CH = CH2 ______ ______ 30

C3H8 belongs to the homologous series of ______.


Consider the following molecular formulae of carbon compounds:

(i) CH3COOH (ii) CH3OH (iii) C2H6 (iv) C3H4 (v) C4H

  1. Which one of these compounds belongs to homologous series of alcohols?
  2. Identify the compound having triple bond between carbon-carbon atoms.
  3. Write the molecular formula of the first member of the homologous series to which CH3COOH belongs.
  4. Write the general formula of the series to which the compound C4H8 belongs.

Name the third homologue of aldehydes.


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