Q.

Which of the following is the most likely structure of CrCl3.6H2O, if 1/3 of total chlorine of the compound is precipitated by adding AgNO3 to its aqueous solution:

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a

CrCl3.6H2O

b

CrH2O3Cl3H2O3

c

CrCl2H2O4ClH2O

d

CrCl.H2O5Cl2H2O

answer is C.

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Detailed Solution

CrCl2H2O4Cl.2H2O↓AgNO3AgCl ppt.Only one chloride ion is present out of coordination sphere. Only those ions that are present out of coordination sphere participate in precipitation.
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