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1.	Distinguish between 1º, 2º and 3º amines by HNO2 acid test.
Answer» 1º gives N2 gas. 2º gives yellow oily compound. 3º form water soluble salts. CH₃CH₂NH₂ + HNO₂ → C₂H5OH + N₂ + H₂O R₂NH + HNO₂→ R2N N = O + H₂O

Discussion

2.	How will you test the presence of primary amine ?
Answer» By carbyl amine test. RNH₂ + CHCl₃ + 3KOH → RN ≡ C + 3KCl + 3H₂O

How will you test the presence of primary amine ?

Answer»

By carbyl amine test.

RNH₂ + CHCl₃ + 3KOH → RN ≡ C + 3KCl + 3H₂O

Discussion

3.	Complete the following acid-base reactions and name the products :(i) CH3CH2CH2NH2 + HCl →(ii) (CH3CH2)3N + HCl →
Answer» (i) CH₃CH₂CH₂N+H₃Cl^- (n-propyl ammonium chloride) (ii) (CH₃CH₂)₃ N⁺HCl^- (Triethyl ammonium chloride)

Discussion

4.	Account for the following :(i) Electrophilic substitution in aromatic amines takes place more readily than benzene.(ii) Nitro compounds have higher boiling points than hydrocarbons having almost same molecular mass.
Answer» (i) NH₂ is ERG, electrophilic substitution takes place faster. (ii) Nitro compounds are more polar than hydrocarbons therefore have more van der Waals forces of attraction.

Discussion

5.	Write IUPAC name of CH3NC.
Answer» Methane carbylamine.

Discussion

Explore topic-wise InterviewSolutions in .

Distinguish between 1º, 2º and 3º amines by HNO2 acid test.

How will you test the presence of primary amine ?

Complete the following acid-base reactions and name the products :(i) CH3CH2CH2NH2 + HCl →(ii) (CH3CH2)3N + HCl →

Account for the following :(i) Electrophilic substitution in aromatic amines takes place more readily than benzene.(ii) Nitro compounds have higher boiling points than hydrocarbons having almost same molecular mass.

Write IUPAC name of CH3NC.