Which of the following is the most likely structure of `CrCl_3*6H_2O`, if `1//3` of total chlorine of the compound is precipitated by adding `AgNO_3` to its aqueous solution:

Options

A. `CrCl_3. 6H_2 O`
B. `[Cr(H_2 O)_3 Cl_3]. (H_2 O)_3`
C. `[Cr Cl_2 (H_2 O)_4 ] Cl. 2H_2 O`
D. `[CrCl(H_2 O)_5] Cl_2. H_2 O`

Answer

C

Explanation

The ions present in te ionisation sphere are precipitated Hence `[CrCl_2(H_2O)_4]Cl.2 H_2 O` contains 1/3 Cl in ionisation sphere to be precipitated by `AgNO_3` as AgCl