CUET and UG exam JEE Main Mock Test Series 2025 Chemistry Organic Chemistry – Some Basic Principles and Techniques Qualitative and Quantitative Analysis of Organic Compounds
In the precipitation of the iron group (III) in qualitative analysis, ammonium chloride is added before adding ammonium hydroxide to :
1
prevent interference by phosphate ion
2
decrease concentration of –OH ion
3
increase concentration of Cl– ions
4
increase concentration of NH4+ ions