Question

Which one of the following species has maximum conductance in their aqueous solutions?

• A. $K_{2}PtC{l}_6$
• B. $PtC{l}_4\cdot 2N{H}_3$
• C. $PtC{l}_4\cdot 3N{H}_3$
• D. $PtC{l}_4\cdot 5N{H}_3$

Answer 1

Answer: (D)

$PtC{l}_4\cdot 5N{H}_3$

Greater the number of ions, greater the conductance.

(a) $K_2\left[PtC{l}_6\right]\rightleftharpoons 2K^{+}+[PtC{l}_a{]}^{2-}$ (3 ions)

(b) $\left[Pt\right(N{H}_3{)}_{2}C{l}_4]$ (No ions)

(c) $\left[Pt\right(N{H}_3{)}_{3}C{l}_3]Cl\rightleftharpoons [Pt\left(N{H}_3{)}_{3}C{l}_3\right]+C{l}^{-}$ (two ions)

(d) $\left[Pt\right(N{H}_3{)}_{5}Cl]C{l}_3\rightleftharpoons [Pt\left(N{H}_3{)}_{5}Cl\right]+3C{l}^{-}$ (4 ions), it has maximum electrolytic conductance