PROPERTIES OF ETHANOL
- It is a colourless, volatile liquid with characteristic pleasant odour.
- It has boiling point of 351 K.
Following are the important chemical properties of ethanol.
Ethanol can easily burn in air to produce carbon dioxide and water.
2. Reaction with Na Metal
Ethanol Reacts With Sodium Metal To Produce Sodium Ethoxide And Hydrogen Gas
3. Dehydration of Ethanol
When ethanol is heated to 1600-1700C in the presence of sulphuric acid (H2SO4) then a molecule of water is liberated and ethene is formed.
4. Oxidation of Ethanol
The oxidation of alcohol involves the formation of a carbon-oxygen bond. These reactions are also called degradation reactions because these reactions involve loss of hydrogen from ethanol. The oxidation process can be carried out by a number of reagents such as potassium permanganate (KMnO4) or chromic anhydride (CrO3).
1) Oxidation by Chromic Anhydride
By chromic anhydride ethanol is converted into ethanal.
2) Oxidation by Potassium Permanganate
Ethanol can be converted into ethanoic acid by oxidation of KMnO4 as follows:
Ethanol reacts with carboxylic acids in the presence of conc. H2SO4 as catalyst to form sweet smelling substance called esters having general formula (RCOOR). This process is called esterification.