Question

Name the reaction used to test the primary amine .write the complete balanced equation for the above equation

Answer 1

Answer:

$\bigstar\:\underline{\boxed{\bf{\red{Carbylamine\:reaction:}}}}$

• When primary (1°) amines are heated with chloroform and ethanoic KOH solution, alkyl isocyanides are produced, which have characteristic foul smell.
• This reaction is characteristic to the primary amine.
• This test is known as carbylamine test or isocyanide test.

❇ Chemical Reaction :

$\bigstar\bf\:\orange{RNH_2+CHCl_3+3KOH}\purple{\rightarrow}\green{RNC+3KCl+3H_2O}$

Answer 2

Answer:

☣ Carbylamine test :

• Only aliphatic and aromatic primary amines give this test.

⭕ Chemical reaction :

$\bf\gray{C_6H_5NH_2+CHCl_3+3KOH\rightarrow C_6H_5NC }$

→ C6H5NH2 : Aniline

→ CHCl3 : Chloroform

→ KOH : Potassium hydroxide

→ C6H5NC : Phenyl isocynide

➡ Additional Information :

• Amines are the ammonia derivatives obtained by replacing one, two or three hydrogen atoms by alkyl/aryl groups.
• Amines can be classified as 1°, 2° or 3° amines depending on the number of alkyl/aryl groups present in ammonia molecule.