\([Co (NH_3)_5 Br] (NO_3)_2 + 2AgCl_{(s)} (y) 0.02 \times 2 = 0.04\) મોલ
\([Co (NH_3)_5Cl] SO_4 + BaCl_2 → [Co (NH_3)_5 Cl] Cl_2 + 0.02\) મોલ
\(BaSO_4 (s)\)
\((z) 0.02\) મોલ
$\mathrm{NO}_2^{-}, \mathrm{SCN}^{-}, \mathrm{C}_2 \mathrm{O}_4^{2-}, \mathrm{NH}_3, \mathrm{CN}^{-}, \mathrm{SO}_4^{2-}, \mathrm{H}_2 \mathrm{O}$.