KEAM 2011 Physics and Chemistry Paper

The number of moles of AgCl precipitated =‌

4.305

143.5

=0.03mol
∵ The number of moles of AgCl obtainable from 0.01 mole of complex =0.03mol
∴ The number of moles of AgCl obtainable from 1mol of complex =3mol
i.e., 3 replacable chlorines are present in complex. Thus, the formula of the complex is [Co(NH3)6]Cl3