Question

Write a note on fischer esterification ? Uses of ethanol ? Write IUPAC name of phyrrogallol. [4 mark]​

Answer 1

${\huge{\bold{\underline{Answer}}}}$

what is fischer esterification??

:$\implies$ Fischer Esterification is an organic reaction which is employed to convert carboxylic acids in the presence of excess alcohol and a strong acid catalyst to give an ester as the final product. This ester is formed along with water. ... The reaction is an example of a nucleophilic acyl substitution reaction.

:$\implies$ The techniques used to remove water from the system during this esterification include the removal of water by azeotropic distillation or adsorption by molecular sieves. The reaction is an example of a nucleophilic acyl substitution reaction. The substitution is based on the nucleophilicity of the alcohol and electrophilicity of the carbonyl carbon.

$\huge\fbox\red{ ♡ uses of ethanol }$

➵Ethanol is an important industrial chemical; it is used as a solvent, in the synthesis of other organic chemicals, and as an additive to automotive gasoline (forming a mixture known as a gasohol). Ethanol is also the intoxicating ingredient of many alcoholic beverages such as beer, wine, and distilled spirits.

➢Also, Ethanol is a commonly used medical alcohol. Alcohols, in various forms, are used within medicine as an antiseptic, disinfectant, and antidote. Alcohols applied to the skin are used to disinfect skin before a needle stick and before surgery

IUPAC name of phyrrogallol.

➛benzen - 1 ,2,3-triol

Molecular Formula

• C6H6O3 or C6H3(OH)3

Answer 2

Answer:

☆ Write a note on Fischer esterification?

Ans: Fischer Esterification is an organic reaction which is employed to convert carboxylic acids in the presence of excess alcohol and a strong acid catalyst to give an ester as the final product. This ester is formed along with water.

☆ Uses of ethanol.

Ans: Uses of Ethanol are follow as:

• Uses of EthanolOwing to its antibacterial and antifungal properties, ethanol (also known as ethyl alcohol) is used in many hand sanitizers and medical wipes.Ethanol is also used as an antiseptic and as a disinfectant.In cases of ethylene glycol poisoning or methyl alcohol poisoning, ethanol is often administered as an antidote.Several medications that are insoluble in water are often dissolved in ethanol. For example, ethanol (in concentrations ranging from 1% to 25%) is used as a solvent for some analgesics and mouthwashes.Ethanol is the primary ingredient in many alcoholic drinks that are orally consumed for recreational purposes. It acts as a psychoactive drug by reducing anxiety and creating a feeling of euphoria in Humans. However, it also impairs cognitive and motor functions and acts as a central nervous system (CNS) depressant.Ethanol is used industrially in the production of ethyl esters, acetic acid, diethyl ether, and ethyl amines.

• This compound is widely used as a solvent due to its ability to dissolve both polar and nonpolar compounds.Since it has a melting point of -114.1oC, ethanol is used as an ingredient in cooling baths in several laboratories. It also serves as the active fluid in many spirit thermometers.

Q.3 Write IUPAC name of phyrrogallol.

Ans:Preferred IUPAC name

•  Benzene-1,2,3-triol
• Others names: 1,2,3-Trihydroxybenzene Pyrogallic acid.