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The anode and cathode of two Galvanic cells are given. Galvanic Cell Anode CathodeCell 1 Mg  znCell 1 Zn AgA. Mg → Mg2+ + 2e- B. Zn2+ +2e- → Zn C. Ag+ +le- → Ag D. Zn → Zn2+ + 2e- E. Ag → Ag+ + le- F. Mg2+ + 2e- → Mg a. Find out the reactions at the anode and cathode for each cell from the above. b. Which metal can act only as cathode? Why?

Answer»

a. Cell 1: Anode Mg → Mg2+ + 2e- 

Cathode Zn2+ + 2e- → Zn 

Cell 2: Anode Zn → Zn2+ + 2e- 

Cathode Ag+ + le- → Ag 

b. Ag. Lesser tendency to give up electron that is it is a less reactive metal.



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