what is a redox couples? identify the redox couples in the reaction.Zn+2Ag = Zn+2Ag
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Explanation:
The galvanic cell in which the given reaction takes place is depicted as:
Zn(s)∣Zn
2+
(aq)∣∣Ag
+
(aq)∣Ag(s)
(i) The negatively charged electrode is the zinc electrode. It acts as an anode.
(ii) In the external circuit, the current will flow from silver to zinc.
(iii) Oxidation at anode:
Zn(s)→
Zn
2+
(aq)+
2e
−
Reduction at cathode:
Ag
+
(aq)+
e −The galvanic cell in which the given reaction takes place is depicted as:
Zn(s)∣Zn
2+
(aq)∣∣Ag
+
(aq)∣Ag(s)
(i) The negatively charged electrode is the zinc electrode. It acts as an anode.
(ii) In the external circuit, the current will flow from silver to zinc.
(iii) Oxidation at anode:
Zn(s)→
Zn
2+
(aq)+
2e
−
Reduction at cathode:
Ag
+
(aq)+
e −
Ag(s)
Ag(s)
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