Question

chemical properties of ethanol​

Answer 1

Answer:

hey mate

Explanation:

Pure ethanol is a flammable, colorless liquid with a boiling point of 78.5° C. Its low melting point of -114.5° C allows it to be used in antifreeze products. It has a pleasant odor reminiscent of whiskey. Its density is 789 g/l about 20% less than that of water.

hope it help u

Answer 2

Ethanol :-

Ethanol is commonly known as alcohol. All alcoholic beverages and some cough syrups contain ethanol. It's molecular formula is $\sf{C_2H_5OH}$. Ethanol ($\sf{C_2H_5OH}$)

Chemical properties :-

(1) Dehydration (Loss of water) :

When ethanol is heated with con $\sf{H_2SO_4}$ at 443K, it losses water that is dehydrated to form ethene.

$\sf{CH_3CH_2OH\:⟶CH_2\:=\:CH_2\:+\:H_2O}$

(2) Reaction with sodium :

Ethanol reacts with sodium metal to form sodium ethoxide and hydrogen gas.

$\sf{2C_2H_5OH\:+\:2na⟶2C_2H_5ONa\:+\:H_2}$

(3) Oxidation :

Ethanol is oxidized to ethanoic acid with alkaline $\sf{KMnO_4}$ or acidified $\sf{K_2Cr_2O_7}$

$\sf{CH_3CH_2OH⟶CH_3COOH\:+\:H_2O}$

During this reaction, the orange colour of $\sf{K_2Cr_2O_7}$ changes to green. So, this reaction can be used for the identification of alcohols.

(4) Esterfication :

The reaction of an alcohol with a carboxylic acid gives a compound having fruity odour.This compound is called an ester. Ethanol reacts with ethanoic acid in the presence of conc. $\sf{H_2SO_4}$ to form ethyl ethanoate, an ester.

$\sf{C_2H_5OH\:+\:CH_3COOH⟶CH_3COOC_2H_5\:+\:H_2O}$

(5) Dehydrogenation :

When the vapour of ethanol is passed over heated copper, used as a catalyst at 573K, it is dehydrogenated to acetaldehyde.

$\sf{CH_3CH_2OH⟶CH_3CHO\:+\:H_2}$

(6) Combustion :

Ethanol is highly inflammable liquid. It burns with oxygen to form carbon dioxide and water.

$\sf{C_2H_5OH\:+\:3O_2⟶2CO_2\:+\:3H_2O}$