Manipal MET2013Chemistryp Block Elements (Group 15, 16, 17 & 18)
(A)+ tap water white turbidity soluble in a q . NH ₃(A) residue (B)+ NO ₂+ O ₂ Aqueous (A) gives brown ring on adding FeSO ₄ and Conc. H ₂ SO ₄ . Identify (A) .
Options
- ANaNO ₃
- BAgNO ₃
- CNaNO ₂
- DAgNO ₂
Correct answer
B. AgNO ₃
Step-by-step solution
(A)+ tap water white turbidity soluble in aq. NH ₃ . Tap water has Cl ⁻ and turbidity is soluble in aq NH ₃ . Turbidity is of AgCl and thus (A) has Ag ⁺ (A) also gives ring test of NO ₃⁻(A) has nitrate and thus (A) is AgNO ₃