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Question
What type of isomerism is exhibited by the complex [Co(NH3)5Cl]SO4?
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Solution
The complex [Co(NH3)5Cl)]SO4 exhibits ionization isomerism. This occurs because the counterions (\[\ce{SO^{2-}_4}\] and Cl−) can switch places, resulting in different isomers like [Co(NH3)5SO4)]Cl. Despite having the same composition, these isomers differ in the ions present in solution.
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Give evidence that [Co(NH3)5Cl]SO4 and [Co(NH3)5SO4]Cl are ionisation isomers.
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