Question

Write out all the homologous series with their general formula

Answer 1

Methane ( 1 carbon atom in chain )

CH4



Ethane ( 2 carbon atoms in chain )

C2H6



Propane ( 3 carbon atoms in chain )

C3H8



Buthane ( 4 carbon atoms in chain )

C4H10



Pentane ( 5 carbon atoms in chain )

C5H12



Hexane ( 6 carbon atoms in chain )

C6H14



Heptane ( 7 carbon atoms in chain )

C7H16



Octane ( 8 carbon atoms in chain )

C8H18



Nonane ( 9 carbon atoms in chain )

C9H20



Decane ( 10 carbon atoms in chain )

C10H22



As can be seen in the case of the example of the homologous series of alkanes (above), the basic molecular structure of all members of the series takes the same form. The difference between members of the homologous series depends on the value of n, which represents the number of carbon atoms in the chain.

The homologous series of alkanes is the simplest and probably most often cite

Answer 2

name alkane alkene alkyne
formula. CnH2n+2 CnH2n CnH2n-2
example. methane ethene ethyne
ethane. propene. propyne
propane. butene. butyne