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Question
When an excess of AgNO3 is added to the complex, one mole of AgCl is precipitated. The formula of the complex is ______.
Options
[CoCl2(NH3)4]Cl
[CoCl(NH3)4]Cl2
[CoCl3(NH3)3]
[Co(NH3)6]Cl3
[CoCl(NH3)5]Cl2
Solution
When an excess of AgNO3 is added to the complex one mole of AgCl is precipitated. The formula of the complex is [CoCl2(NH3)4]Cl.
Explanation:
Only one mole of AgCl is precipitated, there is one free Cl⁻ ion outside the coordination sphere, which matches [CoCl2(NH3)4]Cl.
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