Question

For the reaction given below:

\[\ce{COCl3 x NH3 + AgNO3(ag) ->}\]

If two equivalents of AgCl precipitate out, then the value of x will be ______.

Options

• 10

• 1

• 5

• 3

Answer 1

For the reaction given below:

\[\ce{COCl3 x NH3 + AgNO3(ag) ->}\]

If two equivalents of AgCl precipitate out, then the value of x will be 5.

Explanation:

\[\ce{COCl3 x NH3 + AgNO3(ag) -> \underset{2 mol}{AgCl\downarrow}}\]

Two equivalents of AgCl precipitates out, which symbolises that there are two free Cl^– ions. The coordination number of Co is six. So, the ligands inside the coordination sphere should be six. Hence, the complex should be \[\ce{[Co(NH3)5Cl]Cl2}\].

\[\ce{[CO(NH3)5Cl] Cl2 + AgNO3 -> \underset{2 mol}{AgCl\downarrow}}\]

Hence, the value of x is 5.