Question

The compounds C2H4, C3H6, C4H8, C5H10 are in homologous series. Why? Write the general name and general formula for the carbon compounds​

Answer 1

The compounds C2H4, C3H6, C4H8, C5H10 are in homologous series because the successive compounds have an extra CH₂ group than its preceding one.

• A homologous series is a series of organic compounds that have the same functional groups (if present) and differ from the next member because of having an extra -CH₂ group.
• The general name for these compounds is an alkene and the general formula is CₙH₂ₙ.
• Alkenes are organic compounds that have a carbon-carbon double bond in them. Thus they are unsaturated organic compounds.
• Alkenes have similar physical and chemical properties. Thus they form a homologous series.

Answer 2

Answer:

because the successive compounds have an extra CH₂ group than its preceding one.

A homologous series is a series of organic compounds that have the same functional groups (if present) and differ from the next member because of having an extra -CH2 group.

The general name for these compounds is an alkene and the general formula is CnH₂n.

Alkenes are organic compounds that have a carbon-carbon double bond in them. Thus they are unsaturated organic compounds.

Alkenes have similar physical and chemical properties. Thus they form a homologous series.