Answer
Verified
443.4k+ views
Hint:Acetic anhydride is the simplest isolable anhydride of carboxylic acid and has the formula ${(C{H_3}CO)_2}O$. This is also known as ethanoic anhydride. It is widely used as a reagent in organic chemistry.
Complete step by step answer:
In the laboratory, acetic anhydride is prepared by treating the acetyl chloride with the sodium salt of carboxylic acids. The chemical reaction for the preparation of acetic anhydride from acetyl chloride is given as below:
Hence the correct answer is option B.
Additional information: There are some other methods for the preparation of acetic anhydride and they are discussed below:
1.We can prepare acetic anhydride by heating the two molecules of carboxylic acid in the presence of a strong dehydrating agent such as phosphorus pentoxide or concentrated sulphuric acid by the elimination of a molecule of water. The chemical reaction for above is written as :
2.Acetic anhydride can also be obtained by treating acid chlorides with a carboxylic acid in the presence of pyridine as a base as given below:
Note:
Acetic anhydride is a clear liquid and it smells like vinegar. It is used as the raw material for the cellulose acetate fiber and plastic also. It is also used as a reagent in a number of chemical syntheses. It is also used in the preparation of aspirin and other pharmaceutical manufacturing. But it is highly corrosive and irritates, burns the skin and eye with possible eye damage. In high concentrations, it can cause lung damage with shortness of breath.
Complete step by step answer:
In the laboratory, acetic anhydride is prepared by treating the acetyl chloride with the sodium salt of carboxylic acids. The chemical reaction for the preparation of acetic anhydride from acetyl chloride is given as below:
Hence the correct answer is option B.
Additional information: There are some other methods for the preparation of acetic anhydride and they are discussed below:
1.We can prepare acetic anhydride by heating the two molecules of carboxylic acid in the presence of a strong dehydrating agent such as phosphorus pentoxide or concentrated sulphuric acid by the elimination of a molecule of water. The chemical reaction for above is written as :
2.Acetic anhydride can also be obtained by treating acid chlorides with a carboxylic acid in the presence of pyridine as a base as given below:
Note:
Acetic anhydride is a clear liquid and it smells like vinegar. It is used as the raw material for the cellulose acetate fiber and plastic also. It is also used as a reagent in a number of chemical syntheses. It is also used in the preparation of aspirin and other pharmaceutical manufacturing. But it is highly corrosive and irritates, burns the skin and eye with possible eye damage. In high concentrations, it can cause lung damage with shortness of breath.
Recently Updated Pages
10 Examples of Evaporation in Daily Life with Explanations
10 Examples of Diffusion in Everyday Life
1 g of dry green algae absorb 47 times 10 3 moles of class 11 chemistry CBSE
What happens when dilute hydrochloric acid is added class 10 chemistry JEE_Main
What is the meaning of celestial class 10 social science CBSE
What causes groundwater depletion How can it be re class 10 chemistry CBSE
Trending doubts
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Which are the Top 10 Largest Countries of the World?
How do you graph the function fx 4x class 9 maths CBSE
Distinguish between the following Ferrous and nonferrous class 9 social science CBSE
The term ISWM refers to A Integrated Solid Waste Machine class 10 social science CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Which is the longest day and shortest night in the class 11 sst CBSE
In a democracy the final decisionmaking power rests class 11 social science CBSE