Arrange the following complexes in the increasing order of conductivity of their solution:
\[
[\text{Cr(NH}_3\text{)}_5\text{Cl}] \text{Cl}_2, \, [\text{Cr(NH}_3\text{)}_3\text{Cl}_3], \, [\text{Cr(NH}_3\text{)}_6\text{Cl}_3]
\]
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Solution and Explanation
The conductivity of a compound in solution depends on the number of ions it dissociates into. The more dissociation, the higher the conductivity.
For the given complexes:
- [Cr(NH3)5Cl]Cl2 dissociates into 2 ions.
- [Cr(NH3)3Cl3] dissociates into 4 ions.
- [Cr(NH3)6Cl3] dissociates into 6 ions.
Thus, the order of conductivity is:
[Cr(NH3)3Cl3] < [Cr(NH3)5Cl]Cl2 < [Cr(NH3)6Cl3]
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