Answer
Verified
394.8k+ views
Hint: We must remember the reactivity of aniline. If we react to aniline with conc. \[\;{\text{HN}}{{\text{O}}_{\text{3}}}\] we will get benzoquinone. Because concentrate nitric acid is a strong oxidising agent which oxidises the amine group into carbonyl compounds in benzene rings.
Complete step by step answer:
In the presence of concentrated nitric acid, aniline gets oxidised to give p-benzoquinone.
Generally in the presence of nitric acid and sulphuric acid, aniline forms anilinium nitrate as an intermediate product and forms azobenzene nitrate.
Hence, option C is the correct answer.
Additional Information:-
1. Aniline is a light brownish oily liquid with a musty and smells like the odour of a rotten fish. It is a flammable liquid and has an unpleasant odour. The compound is soluble in water. Aniline has a boiling point of $184^oC$ and melting point of about $-6^oC$ .
2. Basicity of aniline
Aniline is a weak base. They react with strong acids to form anilinium (or phenylammonium) ion\[\left( {{C_6}{H_5} - N{H_3}^ + } \right)\].
Therefore, aniline when treated with a mixture of sulphuric acid and nitric acid gives a mixture of o-, m- and p- nitroaniline.
3. Since aniline is a base, it is used to make dyes, drugs, explosives, plastics, and photographic and rubber chemicals. It is used in the large-scale production of drugs such as paracetamol, Tylenol, acetaminophen. It is also used as a pesticide and fungicides in the agricultural industry.
Note:
1. Instead of conc. nitric acid, a mixture of sulphuric acid and potassium dichromate can also be used to oxidise aniline into p-benzoquinone
2. Benzoquinone is used as a hydrogen acceptor and an oxidant in much important organic synthesis. 1,4-Benzoquinone is employed as a dehydrogenation reagent. It also serves as a dienophile in Diels Alder reactions. It is also used to suppress double-bond migration during olefin metathesis reactions.
Complete step by step answer:
In the presence of concentrated nitric acid, aniline gets oxidised to give p-benzoquinone.
Generally in the presence of nitric acid and sulphuric acid, aniline forms anilinium nitrate as an intermediate product and forms azobenzene nitrate.
Hence, option C is the correct answer.
Additional Information:-
1. Aniline is a light brownish oily liquid with a musty and smells like the odour of a rotten fish. It is a flammable liquid and has an unpleasant odour. The compound is soluble in water. Aniline has a boiling point of $184^oC$ and melting point of about $-6^oC$ .
2. Basicity of aniline
Aniline is a weak base. They react with strong acids to form anilinium (or phenylammonium) ion\[\left( {{C_6}{H_5} - N{H_3}^ + } \right)\].
Therefore, aniline when treated with a mixture of sulphuric acid and nitric acid gives a mixture of o-, m- and p- nitroaniline.
3. Since aniline is a base, it is used to make dyes, drugs, explosives, plastics, and photographic and rubber chemicals. It is used in the large-scale production of drugs such as paracetamol, Tylenol, acetaminophen. It is also used as a pesticide and fungicides in the agricultural industry.
Note:
1. Instead of conc. nitric acid, a mixture of sulphuric acid and potassium dichromate can also be used to oxidise aniline into p-benzoquinone
2. Benzoquinone is used as a hydrogen acceptor and an oxidant in much important organic synthesis. 1,4-Benzoquinone is employed as a dehydrogenation reagent. It also serves as a dienophile in Diels Alder reactions. It is also used to suppress double-bond migration during olefin metathesis reactions.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
Trending doubts
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Summary of the poem Where the Mind is Without Fear class 8 english CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
Write an application to the principal requesting five class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
What is the z value for a 90 95 and 99 percent confidence class 11 maths CBSE