36 Questions
What is the general method of preparation of ethyl nitrite?
By adding concentrated HCl or H2SO4 to aqueous solution of sodium nitrite and ethyl alcohol at very low temperature (0°C).
What are the two forms of nitrous acid?
Nitrite form and nitro form
What is the most important alkyl nitrite?
Ethyl nitrite
What is the classification of nitro alkanes?
As nitro derivatives of alkanes
What is the nature of alkyl nitrites?
They are alkyl esters of nitrous acid
What are the types of derivatives that can be obtained from nitrous acid?
Alkyl nitrites and nitro alkanes
What is the product of the reaction between C2H5ONO and sodium hydroxide?
C2H5OH and NaNO2
Which of the following nitro compounds does not react with nitrous acid?
Tertiary nitro alkane
What is the product of the nitration of benzene using concentrated HNO3 and H2SO4?
Nitrobenzene
What is the product of the reduction of aromatic nitro compounds?
Primary amine
What is the colour of the solution formed when primary nitro alkanes react with sodium hydroxide?
Red
What is the method of preparation of aromatic nitro compounds?
Nitration
What is the effect of the –NO2 group on the nuclear halogen in a molecule?
Makes it more reactive towards nucleophilic substitutions
What is the acidity order of nitrophenols?
p- > o- > m-
What is the use of nitrobenzene in the preparation of?
Shoe polish and cheaper soaps
What type of reaction occurs between nitro compounds and nucleophiles?
Nucleophilic substitution
What is the characteristic property of aromatic nitro compounds that makes them useful as solvents?
High polarity
What is the reaction that occurs when nitro compounds like TNT, picric acid, and TNB are used as explosives?
Combustion reaction
What is the purpose of Liebermann's nitroso reaction?
To distinguish between 1o, 2o, and 3o amines
What is the result of the reaction between tertiary amines and nitrous acid?
Formation of nitrite salts
What is the effect of electron-withdrawing groups on the basicity of amines?
Decrease the electron density on the nitrogen atom
What is the order of basicity of amines?
(CH3)2NH > CH3NH2 > NH3 > C6H5NH2
What is the product of the reaction between a secondary amine and nitrous acid?
Nitrosoamine
What is the purpose of the Hofmann's mustard oil reaction?
To prepare mustard oil from alkyl halides
What is the primary function of the nitrous acid test in amines?
To identify the type of amine
What is the product of the reaction between aniline and carbon di sulphide?
Dialkyl dithiocarbamic acid
What is the product of the reaction between aniline and bromine water?
2,4,6-Tri-bromo aniline
What is the effect of the amino group on the aromatic ring in aniline?
It activates the ring and directs the incoming group to ortho and para positions
What is the reducing agent used in the Hofmann's mustard oil reaction?
HgCl2
What is the oxidation product of a tertiary amine when reacted with Caro's acid?
Amine oxide
What is the final product of the oxidation of primary amines?
Aldehyde
What is the purpose of acetylation in the Liebermann's nitroso reaction?
To deactivate the ring and control the reaction to monosubstitution stage
What is the purpose of acetylating aniline with acetic anhydride before halogenation?
To ensure monosubstitution at the ortho and para positions
What is the characteristic of the Liebermann's nitroso reaction?
It produces a nitrosoamine
What is the test used to identify aniline, which involves the reaction with bromine water?
Bromoaniline test
What is the oxidation product of a secondary amine when reacted with potassium permanganate?
Tetra-alkyl hydrazine
Explore the different types of nitrogen containing organic compounds, including alkyl nitrites, nitro-alkanes, aromatic nitro compounds, and more. Learn about their structures, reactions, and importance in chemistry.
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