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Depict the galvanic cell in which the reaction Zn(s) + 2Ag+(aq) → Zn2+(aq) + 2A(s) takes place, further show: 

(i) which of the electrode is negatively charged, 

(ii)the carriers of the current in the cell, and 

(iii) individual reaction at each electrode. 

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Answer: We have

The galvanic cell corresponding to the given redox reaction can be represented as: 

Zn / Zn2+(aq)  //  Ag+(aq)  /  Ag

(i) Zn electrode is negatively charged because at this electrode, Zn oxidizes to Zn2+ and the leaving electrons accumulate on this electrode. 

(ii) Ions are the carriers of current in the cell. 

(iii) The reaction taking place at Zn electrode can be represented as: 

Zn(s)    →    Zn2+   +  2e-

And the reaction taking place at Ag electrode can be represented as: 

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