Question

The number of moles of AgCl precipitated when excess AgNO$_3$ solution is mixed with one mole of [Co(NH$_3$)$_4$Cl$_2$]Cl is:

• A. 1
• B. 0
• C. 2
• D. 3

Hint:

Check how many Cl$^-$ ions are free vs. inside the complex ion.

Answer 1

The Correct Option is A

In [Co(NH$_3$)$_4$Cl$_2$]Cl, a chloride ion situated outside the coordination sphere reacts with AgNO$_3$, yielding a precipitate of AgCl.