A, B and C are three complexes of chromium (III) with the empirical formula H_(12)O_(6)Cl_(3)Cr. All the three complexes have water and chlorie ions as ligands. Complex A does not react with conc. H_(2)SO_(4) whereas complexes B and C lose 6.75% and 13.5% of their original weight respectively, on treatment with concentrated H_(2)SO_(4). The complex B is

A, B and C are three complexes of chromium (III) with the empirical fo

1.	A, B and C are three complexes of chromium (III) with the empirical formula H_(12)O_(6)Cl_(3)Cr. All the three complexes have water and chlorie ions as ligands. Complex A does not react with conc. H_(2)SO_(4) whereas complexes B and C lose 6.75% and 13.5% of their original weight respectively, on treatment with concentrated H_(2)SO_(4). The complex B is
Answer» `[Cr(H_(2)O)_(4)Cl_(2)]CL.2H_(2)O` `[Cr(H_(2)O)_(3)Cl_(3)].3H_(2)O` `[Cr(H_(2)O)_(5)Cl]Cl_(2).H_(2)O` `[Cr(H_(2)O)_(6)]Cl_(3)` Solution :`B=[Cr(H_(2)O)_(5)Cl]Cl_(2).H_(2)O overset(H_(2)SO_(4))RARR` one mole of `H_(2)O` is removed. Molecular WEIGHT of the complex = 266.5 `%" loss "=(18)/(266.5)xx100=6.75%`