Advertisements
Advertisements
प्रश्न
Give one chemical test to distinguish between the following pair of compounds.
Ethylamine and aniline
Advertisements
उत्तर
Ethylamine is a primary aliphatic amine, while aniline is a primary aromatic amine. They can be differentiated by azo dye test.
Azo dye test: In this, aromatic primary amine reacts with HNO2 (NaNO2 + dil. HCl) at 273 – 278 K and then reacts with alkaline solution of 2-naphthol (β-naphthol) to give a deep yellow, orange or red colored dye.
Aliphatic primary amines under the above conditions rapidly release nitrogen gas with the formation of primary alcohols, i.e., the solution remains transparent.
\[\ce{\underset{Ethylamine}{C2H5NH2} + HONO ->[273 - 278 K] \underset{ethyl alcohol}{C2H5OH} + H2O + N2 ^}\]
APPEARS IN
संबंधित प्रश्न
Convert 3-Methylaniline into 3-nitrotoluene.
Convert aniline into 1, 3, 5-tribromobenzene.
Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.
CH3(CH2)2NH2
Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.
(CH3)3CNH2
Give one chemical test to distinguish between the following pair of compounds.
Methylamine and dimethylamine
Account for the following:
Ethylamine is soluble in water, whereas aniline is not.
How will you convert ethanoic acid into methanamine?
How will you convert hexanenitrile into 1-aminopentane?
How will you convert ethanoic acid into propanoic acid?
How will you convert methanamine into ethanamine?
How will you convert nitromethane into dimethylamine?
Accomplish the following conversion:
Aniline to 2, 4, 6-tribromofluorobenzene
Accomplish the following conversion:
Chlorobenzene to p-chloroaniline
Complete the following reaction:
\[\ce{C6H5NH2 + Br2 (aq) ->}\]
Complete the following reaction:
\[\ce{C6H5NH2 + (CH3CO)2O ->}\]
Give reasons Although –NH2 is o/p directing group, yet aniline on nitration gives a significant amount of m-nitroaniline
How are ethylamine and ethyl methyl amine distinguished by using nitrous acid?
Using IUPAC norms, write the formula of Hexaamminecobalt(III) sulphate.
Predict the product 'A' in the following reaction.
\[\ce{\underset{(Acetyl chloride)}{CH3COCl}->[H2][Pd-BaSO4]A + HCl}\]
