Match the reagent which are used in qualitative analysis of given anions :
Column-I | Column-II | ||
(a) | AgNO3 solution | (p) | CO32– |
(b) | BaCl2 solution | (q) | Cl– |
(c) | Pb(NO3)2 solution | (r) | S2– |
(d) | Acidified KMnO4 solution | (s) | NO2– |
Text Solution
Verified by ExpertsCHECK THE SOLUTION.
- (p,q,r,s) ; - (p) ; - (p,q,r) ; - (q,r,s)
Sol. ⇒ Ag + + CO 3 2– ⎯→ Ag 2 CO 3 ↓ (white ppt.)
Ag + + Cl – ⎯→ AgCl ↓ (white ppt.)
Ag + + S 2– ⎯→ Ag 2 S ↓ (black ppt.)
Ag + + NO 2 – ⎯→ AgNO 2 ↓ (white ppt.)
⇒ Ba 2+ + CO 3 2– ⎯→ BaCO 3 ↓ (milky)
⇒ Pb 2+ + CO 3 2– ⎯→ PbCO 3 ↓ (white ppt.)
Pb 2+ + Cl – ⎯→ PbCl 2 ↓ (white ppt.)
Pb 2+ + S 2– ⎯→ PbS ↓ (black ppt.)
⇒ Acidified KMnO 4 solution is oxidizing agent. It can oxidize Cl – , S 2– , NO 2 – and becomes colourless.
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