A) By measurement of their conductivity
B) By titration method
C) By precipitation method with \[AgN{{O}_{3}}\]
D) By electrolysis of their aqueous solutions
Correct Answer: D
Solution :
| The given compounds are isomeric. They can be distinguished by electrolysis of their aqueous solution. |
| On electrolysis of its aqueous solution the complex ions of cobalt i.e.\[{{\left[ Co{{(N{{H}_{3}})}_{6}} \right]}^{3+}}\] of the complex \[[Co{{(N{{H}_{3}})}_{6}}][Cr{{(N{{O}_{2}})}_{6}}]\] moves towards cathode (i.e., negative electrode) and on this electrode finally cobalt would be deposited. |
| On electrolysis of aqueous solution of the complex ion of chromium \[{{[i.e.,Cr{{(N{{H}_{3}})}_{6}}\}}^{3+}}]\] of the complex \[[Cr{{(N{{H}_{3}})}_{6}}][Co{{(N{{O}_{2}})}_{6}}]\] moves towards cathode (i.e., negative electrode) and on this electrode chromium would finally be deposited. |
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