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Ionization In Solution

Mediumchemistry

A 1.0 L solution contains 0.010 mol of [Co(NH3)6]Cl3 and it dissociates completely. The concentration of Cl− ions is:

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About This Question

Subject
chemistry
Chapter
coordination compounds
Topic
ionization in solution
Difficulty
Medium
Year
2025
Tags
DissociationMolar ConcentrationCounter Ions

Solution

Correct Answer:

0.030 mol L−1

Because three chloride ions are outside the coordination sphere, each mole of [Co(NH3)6]Cl3 gives 3 moles of Cl− on dissociation. So moles of Cl− = 0.010 × 3 = 0.030 mol. In 1.0 L, concentration is 0.030 mol L−1.

This medium difficulty chemistry question is from the chapter coordination compounds, covering the topic of ionization in solution. It appeared in the 2025 exam.

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