Question

(i) Write the names of first four homologous series of alkenes.
Homologous
series of alkenes​

Answer 1

The homologous series of straight-chained alkanes begins methane (CH4), ethane (C2H6), propane (C3H8), butane (C4H10), and pentane (C5H12).

The alkenes comprise a series of compounds that are composed of carbon and hydrogen atoms with at least one double bond in the carbon chain. This group of compounds comprises a homologous series with a general molecular formula of C n H 2 n , where n equals any integer greater than one.

Answer 2

ANSWER

Alkene Homologous Series

Name Number of Carbon atoms Molecular Formula CnH2n

ethene 2 C2H2(2) = C2H4

Propene 3 C3H2(3) = C3H6

Butene 4 C4H2(4) = C4H8

Pentene 5 C5H2(5) = C5H10