why is h2so4 added drop by drop in the detecton test for nitrogen using lassaigns extract - Chemistry - Organic Chemistry Some Basic Principles and Techniques

Question

why is h2so4 added drop by drop in the detecton test for nitrogen
using lassaigns extract

Ram Saroj Dubey · Accepted Answer

Dear Student, In detection of nitrogen using Lassaigne extract
H2SO4 is added so as to dissolve the green precipitate of Fe(OH)2
and oxidise Fe2+ to Fe3+ Regards,