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प्रश्न
Which of the following has least conductivity in aqueous solution?
विकल्प
\[\ce{Co(NH3)4Cl3}\]
\[\ce{Co(NH3)3Cl3}\]
\[\ce{Co(NH3)5Cl3}\]
\[\ce{Co(NH3)6Cl3}\]
MCQ
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उत्तर
\[\ce{Co(NH3)3Cl3}\]
Explanation:
The number of ions dissociated in a solution has a direct relationship with conductivity.
\[\ce{Co(NH3)4 Cl3 -> [Co\underset{2 ions}{(NH3)4} Cl2] + Cl-}\]
\[\ce{Co(NH3) Cl3 -> [Co\underset{1 ion}{(NH3)} (Cl3)]}\]
\[\ce{Co(NH3)5 Cl3 -> [Co\underset{3 ions}{(NH3)5} Cl]^{2+} + 2Cl-}\]
\[\ce{Co(NH3)6 Cl3 -> [Co\underset{4 ions}{(NH3)6}]^{3+} + 3Cl-}\]
∴ CO(NH3)6 Cl3 will produce higher number of ions and has higher conductivity.
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