Answer:
The correct answer is option a) Fe(s).
Step-by-step explanation:
In this reaction, iron (III) chloride reacts with copper to form copper (I) chloride and iron (II) chloride:
Cu + FeCl3 → CuCl + FeCl2
In this equation, iron begins as the solid state (s), while both copper and iron chloride are in the aqueous (aq) state. The two products, copper chloride (aq) and iron chloride (aq), are in the aqueous state.
Therefore, option a) Fe(s) is the correct answer.