Question

One mole of complex compound $Co(N{H}_3{)}_{5}C{l}_3$ gives 3 moles of ions on dissolution in water. One mole of the same complex reacts with two moles of $AgN{O}_3$ to yeild two moles of $AgC{l}_{\left(S\right)}$. The complex is:

• A. $\left[Co\right(N{H}_3{)}_{4}C{l}_2]Cl.N{H}_3$
• B. $\left[Co\right(N{H}_3{)}_{4}C{l}_2]C{l}_2.N{H}_3$
• C. $\left[Co\right(N{H}_3{)}_{5}Cl]C{l}_2$
• D. $\left[Co\right(N{H}_3{)}_{3}C{l}_3].2N{H}_3$

Answer 1

The correct option is C $\left[Co\right(N{H}_3{)}_{5}Cl]C{l}_2$

$\left[Co\right(N{H}_3{)}_{5}Cl\left]C{l}_2\underset{}{\overset{H_{2}O}{\to }}\right[Co(N{H}_3{)}_{5}Cl{]}^{2+}2C{l}^{-}2AgN{O}_3+2C{l}^{-}\to 2AgCl+2N{O}_3^{-}$