Question

What is meant by homologous series of organic compound? Write the chemical formulae of two memebers of a homologous series and state which part determines the (i) physical (ii) chemical properties of these compaunds?

Answer 1

Answer:

Homologous means to have similar structure or relation. A homologous series is a group of organic compounds having similar structures and similar chemical properties in which the successive compounds differ by -CH2 group.

Explanation:

Homologous means to have similar structure or relation. A homologous series is a group of organic compounds having similar structures and similar chemical properties in which the successive compounds differ by -CH2 group.

The first two members of the homologous series of alcohol are as follows:

1) Methanol (CH3OH)

2) Ethanol (C2H5OH)

The alkyl group determines the physical properties while the functional group determines the chemical properties of the organic compounds.

Be positive and work hard students and good wishes for your examss

Answer 2

The physical property of any particular member of a homologous series depends on its size, or its position within the homologous series. The physical properties, such as solubility, melting point, boiling point, specific gravity etc. show a gradual change with the increase in their relative molecular masses.