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
Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.
(CH3)3CNH2
Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.
(CH3CH2)2NCH3
Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.
m−BrC6H4NH2
Give one chemical test to distinguish between the following pair of compounds.
Methylamine and dimethylamine
Give one chemical test to distinguish between the following pair of compounds.
Secondary and tertiary amines
Give one chemical test to distinguish between the following pair of compounds.
Aniline and N-methylaniline
Account for the following:
Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide.
How will you convert ethanoic acid into methanamine?
How will you convert ethanamine into methanamine?
How will you convert ethanoic acid into propanoic acid?
Accomplish the following conversion:
Aniline to benzyl alcohol
Give reasons Although –NH2 is o/p directing group, yet aniline on nitration gives a significant amount of m-nitroaniline
Do the following conversions in not more than two steps :
Ethyl benzene to Benzoic acid
Using IUPAC norms, write the formula of Hexaamminecobalt(III) sulphate.
The following amine is called as:
Do the following conversions in not more than two steps:
Predict the product 'A' in the following reaction.
\[\ce{\underset{(Acetyl chloride)}{CH3COCl}->[H2][Pd-BaSO4]A + HCl}\]
