Homework Answers
1)the coimplete cell reactio for ZnlZn2+ ll Cu2+l Cu is Zn(s) + Cu2+(aq) ---------> Zn2+ + Cu
the half cell reactions can be written as
anode:
Zn ------> Zn2+ + 2e
cathode:
Cu2+ + 2e -------> Cu
2) the overall reaction can be written as Pb + Cu2+ -----------------> Pb2+ + Cu
half cell reaction can be written as
anode:
Pb --------> Pb2+ + 2e
cathode:
Cu2+ + 2e ---------> Cu
3)the overall cell reaction is 2Ag+ + Pb --------> Pb2+ + Ag
half cell reaction can be written as
anode:
Pb --------> Pb2+ + 2e
cathode:
Ag+ + e -------> Ag
4))the overall cell reaction is 2Ag+ + Cu --------> 2Ag + Cu2+
half cell reaction can be written as
anode:
Cu -------> Cu2+ + 2e
cathode :
Ag+ + e -------> Ag
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