JEE Main202120 Jul 2021Evening ShiftChemistryGeneral Organic ChemistryActual

In Carius method, halogen containing organic compound is heated with fuming nitric acid in the presence of:

Options

AHNO 3
BAgNO 3
CCuSO 4
DBaSO 4

Correct answer

B. AgNO 3

Step-by-step solution

Organic compound is heated with fuming nitric acid in the presence of silver nitrate in carius method. Lunar caustic AgNO 3 is used as reagent hare to distinguish Cl - , Br and I - respectively as follows. Cl - aq ⟶ AgNO 3 AgCl ↓ ppt white Br - aq ⟶ AgNO 3 AgBr ↓ ppt pale yellow I - aq ⟶ AgNO 3 AgI ↓ ppt Dark yellow

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