In coordination chemistry there are a variety of methods applied to find out the structure of complexes. One method involves treating the complex with known reagents and from the nature of raction, the formula of the complex can be predicted. An isomer of the complex Co(en)_(2)(H_(2)O)Cl_(2)Br, on reaction with concentrated H_(2)SO_(4) (dehydrating agent), suffers loss in weight and on reaction with AgNO_(3) solution it gives a white precipitate which is soluble in NH_(3)(aq). The correct formula of the complex is :

In coordination chemistry there are a variety of methods applied to fi

1.	In coordination chemistry there are a variety of methods applied to find out the structure of complexes. One method involves treating the complex with known reagents and from the nature of raction, the formula of the complex can be predicted. An isomer of the complex Co(en)_(2)(H_(2)O)Cl_(2)Br, on reaction with concentrated H_(2)SO_(4) (dehydrating agent), suffers loss in weight and on reaction with AgNO_(3) solution it gives a white precipitate which is soluble in NH_(3)(aq). The correct formula of the complex is :
Answer» `[CoClBr(EN)_(2)]H_(2)O` `[COCL(en)_(2)(H_(2)O)]BrCl` `[CoBr(en)_(2)(H_(2)O)]Cl_(2)` `[CoBrCl(en)_(2)]Cl.H_(2)O` SOLUTION :`[CoBrCl(en)_(2)]Cl.H_(2)O` satisfies both conditions.