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A, B and C are three complexes of Chromioum with the empirical formula H12O6Cl3Cr. All the three complexes have Cl and H2O molecules as the ligands. Complex A does not react with conc. H2SO4. Complexes B and C lose 6.75% and 13.5% of their original weight respectively on heating with conc. H2SO4. Identify A, B and C.

(a)A=[Cr(H2O)6],B=[Cr(H2O)5Cl]Cl2.H2O,C=[Cr(H2O)4Cl2]Cl.2H2O(b)A=[Cr(H2O)3]Cl3,B=[Cr(H2O)2Cl]Cl2.H2O,C=[Cr(H2O)4Cl2]Cl(c)A=[Cr(H2O)6]Cl3,B=[Cr(H2O)5Cl]Cl2.H2O,C=[Cr(H2O)4Cl2]Cl.2H2O(d)A=[Cr(H2O)6]Cl3,B=[Cr(H2O)5Cl]Cl2,C=[Cr(H2O)4Cl2]Cl

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