- Created by: annaliseforrest_xox
- Created on: 12-04-21 14:53
Systematic Carbon Chemistry
Higher Chemistry 2.1
A homologous series is a family of hydrocarbons with the same general formula and similar chemical properties that show a gradual change in physical properties.
The homologous series from National 5 are:
The alkanes have a general formula of CnH2n+2 and don't have a functional group.
The alkenes have a general formula of CnH2n and can be identified by their double bond between the carbons.
The cycloalkanes have a general formula of CnH2n and can be identified by their shape - a ring of single-bonded carbons.
All three hydrocarbon families show the same trends in boiling points. As the molecule increases in size, the boiling points also increase. This can be explained by the London dispersion forces between the molecules…