Q .     `A`, `B` and `C` are three complexes of chromium `(III)` with the empirical formula `H_12O_6Cl_3Cr`. All the three complexes have water and chloride ion as ligands. Complex `A` does not react with concentrated `H_2SO_4`, whereas complexes `B` and `C` lose `6.75%` and `13.5%` of their original mass, respectively, on treatment with concentrated `H_2SO_4` . Identify `A , B` and `C`.

JEE 1999
A

`[Cr(H_2O)_4Cl_2]Cl · 2H_2O`

B

`[Cr(H_2O)_5Cl]Cl_2 · 2H_2O`

C

`[Cr(H_2O)_4Cl_2]C l· H_2O`

D

`[Cr(H_2O)_5Cl]Cl_2 · H_2O`

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