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Q.

A six coordinate complex of formula CrCl3⋅6H2O has green colour. A O.1 M solutionof the complex when treated with excess of AgNO3, gave 28.79 of white precipitate. The formula of the complex would be :

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a

CrH2O6Cl3

b

CrClH2O5Cl2⋅H2O

c

CrCl2H2O4Cl⋅2H2O

d

CrH2O3Cl3

answer is B.

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Detailed Solution

Molar mass of AgCl→143.5gm  Number of moles of AgCl precipitated → 28.7143.5→0.2 moles.   Complex is CrClH2O5Cl2⋅H2O.
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A six coordinate complex of formula CrCl3⋅6H2O has green colour. A O.1 M solutionof the complex when treated with excess of AgNO3, gave 28.79 of white precipitate. The formula of the complex would be :