Question

write the molecular formula of two consecutive members of homologous series of aldehydes and state which part of these compound determines (1) physical properties (2) chemical properties

Answer 1

Answer:

The formula of the two consecutive aldehydes are

1. Formaldehyde(H-CHO)

2. Acetaldehyde(CH3-CHO)

DETERMINING THE CHEMICAL PROPERTY:

the functional group of the chemical -aldehyde group determines the chemical properties .

DETERMINING THE PHYSICAL PROPERTY:

the carbon chain and the number of the carbons present in the carbon chain determines the physical properties of the aldehyde compound.

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.