The two isomers X and Y with the formul Cr(H_(2)O_(5))ClBr_(2) were taken for experiment on depression in freezing point. It was found that one mole of X gave depression corresponding to 2 moles of particles and one mole of Y gave depression due to 3 moles of particles. The structural formulae of X and Y respectively are

The two isomers X and Y with the formul Cr(H_(2)O_(5))ClBr_(2) were ta

1.	The two isomers X and Y with the formul Cr(H_(2)O_(5))ClBr_(2) were taken for experiment on depression in freezing point. It was found that one mole of X gave depression corresponding to 2 moles of particles and one mole of Y gave depression due to 3 moles of particles. The structural formulae of X and Y respectively are
Answer» `[Cr(H_(2)O)_(5)Cl]Br_(2) , [Cr(H_(2)O)_(4)Br_(2)]Cl.H_(2)O` `[Cr(H_(2)O)_(5)Cl]Br_(2) , [Cr(H_(2)O)_(3)ClBr_(2)].2H_(2)O` `[Cr(H_(2)O)_(5)Br]BrCl , [Cr(H_(2)O)_(4)ClBr]Br.H_(2)O` `[Cr(H_(2)O)_(4)Br_(2)]Cl.H_(2)O, [Cr(H_(2)O)_(5)Cl]Br_(2)` Solution :Depression in FREEZING point is a colligative property that depends upon the number of moles of ions which a comples may give in solution. X gave depression corresponding to 2 moles of particles. It means 2 mol of ions of a complexis present in solution, which is only possible when comples is in the FORM `[Cr(H_(2)O)_(4)Br_(2)]Cl. H_(2)O` or `[Cr(H_(2)O)_(4)Br_(2)]^(+)Cl^(-)`. SIMILARLY, Y complex will be `[Cr(H_(2)O)_(5)Cl]Br_(2)` or `[Cr(H_(2)O)_(5)Cl]^(+)+2Br^(+)`.