JEE Main 202624 JanuaryEvening Shift
- Exam
- JEE Main
- Year
- 2026
- Date
- 24 January
- Shift
- Evening Shift
- Subject
- Chemistry
- Chapter
- Coordination Compounds
JEE Main 2026 · 24 January · Evening Shift · Chemistry · Coordination Compounds
A chromium complex with a formula CrCl_ 3 · 6 H_ 2 O has a spin...
A chromium complex with a formula has a spin only magnetic moment value of 3.87 BM and its solution conductivity corresponds to electrolyte. 2.75 g of the complex solution was initially passed through a cation exchanger. The solution obtained after the process was reacted with excess of . The amount of AgCl formed in the above process is g. (Nearest integer)
[Given: Molar mass in ]
[Given: Molar mass in ]
Correct answer
0
Step-by-step solution
The complex with magnetic moment 3.87 BM indicates giving n = 3 unpaired electrons, confirming Cr³⁺.
A 1:2 electrolyte means structure is .
Molar mass = 52 + 5(18) + 35.5 + 6(18) = 285.5 g/mol.
Moles of complex = 2.75/285.5 = 0.00963 mol.
After cation exchange, 2 Cl⁻ remain per formula unit (from the 1:2 electrolyte), giving 0.00963 × 2 = 0.01926 mol of free Cl⁻.
Reacting with excess AgNO₃: mass of AgCl = 0.01926 × 143.5 = 2.76 g ≈ 3 g (nearest integer).
A 1:2 electrolyte means structure is .
Molar mass = 52 + 5(18) + 35.5 + 6(18) = 285.5 g/mol.
Moles of complex = 2.75/285.5 = 0.00963 mol.
After cation exchange, 2 Cl⁻ remain per formula unit (from the 1:2 electrolyte), giving 0.00963 × 2 = 0.01926 mol of free Cl⁻.
Reacting with excess AgNO₃: mass of AgCl = 0.01926 × 143.5 = 2.76 g ≈ 3 g (nearest integer).