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A solution containing 0.319 of complex ...

A solution containing `0.319` of complex `CrCl_3. 6 H_2 O` was passed through cation exchange and the solution given out was neutralised by `2.85` mL of `0.125 M` NaOH. What is the correct formula of the complex.

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The Cl atoms present outside the coordination sphere will be ionised to.produce .HCl. number of milliequivalents of .Cl. -ions. .=. no.of milliequivalents of .HCl. formed. .=. no. of milliequivalents of .NaOH. used
=28.5 xx 0.125 .=3.56
no.of mọles of complex .= mass / gram molecular mass .
=0.319/266.5=1.197 xx 10^-3 ~mole
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