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Pyetja

Funksionimi i një elementi galvanik bazohet në gjysmëreaksionet: \[ MnO_4^- + 8H^+ + 5e^- \rightarrow Mn^{2+} + 4H_2O_{(l)} \quad E^0 = +1.52 \text{ V}\] \[Cl_2(g) + 2e^- \rightarrow 2Cl^-_{(aq)} \quad E^0 = +1.36 \text{ V} \]
Reaksioni i përgjithshëm jonik dhe potenciali standard i elementit (f.e.m), janë:
A) \( MnO_4^- + 8H^+ + Cl_2(g) \rightarrow Mn^{2+} + 4H_2O_{(l)} + 2Cl^- \quad E^0 = +2.88 \text{ V} \)
B) \( Mn^{2+} + 4H_2O_{(l)} + 2Cl^- \rightarrow MnO_4^- + 8H^+ + Cl_2(g) \quad E^0 = +0.12 \text{ V} \)
C) \( 2MnO_4^- + 16H^+ + 10Cl^- \rightarrow 2Mn^{2+} + 8H_2O_{(l)} + 5Cl_2(g) \quad E^0 = +0.16 \text{ V} \)
D) \( Mn^{2+} + 4H_2O_{(l)}…