JEE Main20241 Feb 2024Morning ShiftChemistryGeneral Organic ChemistryActual
In Kjeldahl's method for estimation of nitrogen, CuSO 4 acts as :
Options
- AReducing agent
- BCatalytic agent
- CHydrolysis agent
- DOxidising agent
Correct answer
B. Catalytic agent
Step-by-step solution
Kjeldahl's method is used for the estimation of nitrogen. The organic compound is heated with conc. H 2 SO 4 in presence of K 2 SO 4 and a little CuSO 4 to convert all the nitrogen into NH 4 2 SO 4 . K 2 SO 4 raises the boiling point of H 2 SO 4 while CuSO 4 catalyses the reaction. Hence, B is the answer.