Question

8. One of the example of homologous series is given below.

HCOOH

×

CH3CH2COOH

CH3 CH CH2COOH

I. Name the functional group involved.

II. Define homologous series.

III. Find the mass difference between successive member of above homologous series and calculate the molecular mass.

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Answer 1

Answer:

1. COOH Carboxylic acid

2. Homologous series is a series of compounds with similar chemical properties and some functional group differing from the successive member by CH2. 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 CnH2n+2, alkenes with general formula CnH2n and alkynes with general formula CnH2n-2 form the most basic homologous series in organic chemistry.

Explanation:

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