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Get Answers to all your Questions
Q.58) Out of the following complex compounds which of the compound will be having the minimum conductance in solution?
A) $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Cl}\right] \mathrm{Cl}$
B) $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_3 \mathrm{Cl}_3\right]$
C) $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right]$
D) $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Cl}\right] \mathrm{Cl}$
Answers (1)
Conductance depends on the number of ions a compound produces in solution.
1. $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Cl}\right] \mathrm{Cl} \rightarrow$ Dissociates as: $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Cl}\right]^{+}+\mathrm{Cl}^{-} \rightarrow \mathbf{2}$ ions
2. $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_3 \mathrm{Cl}_3\right] \rightarrow$ No counter ion outside, so it's a neutral complex $\rightarrow \mathbf{0}$ ions
3. $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right] \mathrm{Cl} \rightarrow$ no Cl ion is outise the coordination sphere so it is also a neutral complex.
4. $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]_{\mathrm{Cl}}^3 \rightarrow$ Dissociates as: $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}+3 \mathrm{Cl}^{-} \rightarrow \mathbf{4}$ ions
So correct option is b and c .
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