Question

Chemical formula of 2 members of homologous series of aldehydes

Answer 1

c2h5cho or ch3ch2cho it's chemical name is ethanal

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.