Question

In which one of the following complexes, the conductivity corresponds to 1:2 electrolyte in aqueous solution?

• A. Hexaamminecobalt(III) chloride
• B. Tetraamminedichlorocobalt(III) chloride
• C. Pentaamminechlorocobalt(III) chloride
• D. Triamminetriaquachromium(III) chloride
• E. Diamminesilver(I) dicyanoargentate(I)

Answer 1

The Correct Option is B

The complex where the conductivity corresponds to a 1:2 electrolyte in aqueous solution is Tetraamminedichlorocobalt(III) chloride.

Explanation:

When tetraamminedichlorocobalt(III) chloride dissolves in water, it dissociates into two ions: [Co(NH₃)₄Cl₂] and Cl^-. This dissociation results in the conductivity of a 1:2 electrolyte, where one ion is the complex ion and the other is chloride. The dissociation leads to the production of two ions, thus making the conductivity correspond to a 1:2 electrolyte.