\(\underset{\begin{smallmatrix}
1\,\,mole \\
0.02\,\,mole
\end{smallmatrix}}{\mathop{[Co{{(N{{H}_{3}})}_{5}}Br]C{{l}_{2}}}}\,\,+\,\underset{2\,\,moles}{\mathop{2AgN{{O}_{3}}}}\,\,\to \) \(\underset{1\,\,mole}{\mathop{[Co{{(N{{H}_{3}})}_{5}}Br]{{(N{{O}_{3}})}_{2}}}}\,+\underset{\begin{smallmatrix}
2\,\,moles \\
0.02\,\times 2\,=\,0.04\,mole
\end{smallmatrix}}{\mathop{2AgCl}}\,\,(ppt.)(Y)\)
\(\underset{\begin{smallmatrix}
1\,\,mole \\
0.02\,\,mole
\end{smallmatrix}}{\mathop{[Co{{(N{{H}_{3}})}_{5}}Cl]S{{O}_{4}}\,}}\,+\,BaC{{l}_{2}}\,\to \) \([Co{{(N{{H}_{3}})}_{5}}Cl]C{{l}_{2}}+\,\underset{\begin{smallmatrix}
\,\,\,\,\,\,\,1\,\,moles \\
0.02\,\,mole
\end{smallmatrix}}{\mathop{BaS{{O}_{4}}}}\,\,(ppt.)(Z)\)