CUET · CHEMISTRY · PYQ PAPER 2025
On the basis of following observations arrange the following compounds in increasing order of mol of AgCl precipitated per mol of the compound with excess of AgNO3
| Formula | Secondary valences | Solution conductivity |
| (A) PdCl2.4NH3 | 4 | 1:2 electrolyte |
| (B) NICI4.2K | 4 | 2:1 electrolyte |
| (C) CoCl3.4NH3 | 6 | 1:1 electrolyte |
| (D) CrCl3.6H2O | 6 | 1:3 electrolyte |
- A (C), (A), (B), (D)
- B (B), (C), (A), (D)
- C (C), (A), (D), (B)
- D (D), (A), (C), (B)
Answer & Solution
Correct Answer
(B) (B), (C), (A), (D)
Step-by-step Solution
Detailed explanation
For (A) PdCl2.4NH3: 1:2 electrolyte, secondary valency 4 \(\implies [Pd(NH_3)_4]Cl_2\). Mol of AgCl = 2. For (B) NiCl4.2K: 2:1 electrolyte, secondary valency 4 \(\implies K_2[NiCl_4]\). Mol of AgCl = 0. For (C) CoCl3.4NH3: 1:1 electrolyte, secondary valency 6…
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