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Question: Answered & Verified by Expert
On treatment of 100 ml of 0.1 M solution of the complex CrCl3.6H2O with excess of AgNO3, 4.305 g of AgCl was obtained. The complex is
ChemistryCoordination CompoundsJEE Main
Options:
  • A [Cr(H2O)3 Cl3] . 3H2O
  • B [Cr(H2O)4Cl2] Cl.2H2O
  • C [Cr(H2O)5Cl)Cl2 .H2O
  • D [Cr(H2O)6]Cl3
Solution:
1830 Upvotes Verified Answer
The correct answer is: [Cr(H2O)6]Cl3
Mol of AgCl = 4 . 3 0 5 1 4 3 . 5 = 0 . 0 3 = mol of Cl- given by the complex.

Mol of the complex = 100 x 10-3 x 0.1 = 0.01 ;

Cr H 2 O 6 Cl 3 Cr H 2 O 6 3 + + 3 Cl - 0 . 0 1  mol 0 . 0 1  mol 0 . 0 3  mol

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