1. What is a homologous series of substances?

  1. What is a homologous series of substances?
  2. In an organic compound, which parts largely determine its physical and chemical properties?
  3. Write a chemical equation to represent the reaction of ethanol with acidified solution of potassium dichromate?
  1. A homologous series is a series of carbon compounds that have different numbers of carbon atoms, but contain the same functional group. All the functional groups form a homologous series.

  2. The physical properties of an organic compound are determined by both the number of carbon atoms and the functional group. Its chemical properties are determined only by the functional group.

  3. Acidified potassium dichromate is a strong oxidising agent. It oxidises ethanol to ethnoic acid.