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Which of the following complex compounds will have minimum conductance in solution?

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in Chemistry – Class 12 by (188k points)
Which of the following complex compounds will have minimum conductance in solution?

(a) [Co(NH3)3Cl3]

(b) [Co(NH3)4Cl2]Cl

(c) [Co(NH3)6]Cl3

(d) [Co(NH3)5Cl]Cl2

The question was posed to me in semester exam.

This is a very interesting question from Conductance of Electrolytic Solutions topic in section Electrochemistry of Chemistry – Class 12

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Best answer
The correct answer is (a) [Co(NH3)3Cl3]

Explanation: Electrolytes that ionise in solution have a higher value of conductance. Among the given options, [Co(NH3)3Cl3] does not ionise, whereas the other complexes ionise. Therefore, [Co(NH3)3Cl3] will have minimum conductance in solution.

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