Question

Suppose the galvanic cell sketched below is powered by the following reaction: Ni(s)+ CuCl,(aa)- NICI,(aa)+Cu(s) E1 E2 Write a balanced equation for the haif reaction that happens at the cathode of this cell. Write a balanced equation for the half- reaction that happens at the anode of this cell. Of what substance is El made? Of what substance is E2 made? What are the chemical species in solution S17 What are the chemical species in solution S27 X

Answer 1

Ni(s) + CuCl2(aq) ------------> NiCl2(aq) + Cu(s)

Ni(s) + Cu^2+ (aq) + 2Cl^- (aq) ---------> Ni^2+ (aq) + 2Cl^- (aq) + Cu(s)

Ni(s) + Cu^2+ (aq) ---------> Ni^2+ (aq) + Cu(s)

half reaction at cathode

Cu^2+(aq) + 2e^- -------------> Cu(s)

Half reaction at anode

Ni(s) --------------> Ni^2+ (aq) + 2e^-   

The substance is E1 made Ni anode

The substance is E2 made Cu cathode

The chemical species in S1 = Ni^2+ (aq) , 2Cl^- (aq)

The chemical species in S2 = Cu^2+ (aq) , 2Cl^- (aq)