Answer:
The concentration of [tex]FeCl^{2+}[/tex] will decrease.
Explanation:
[tex]Fe^{3+}(aq) + Cl^-(aq)\rightleftharpoons FeCl^{2+}(aq)[/tex]
According Le Chatelier’s principle:
On ad adding silver nitrate to the equilibrium mixture, the silver ion will get combine with chloride ion to precipitate silver chloride which will in return will decrease the concentration of chloride ions.
And due to decrease in concentration of chloride ions the the equilibrium will shift in left direction that is in backward direction to re-establish it self with which concentration of [tex]FeCl^{2+}[/tex] will decrease.