\(E^o_{pin}Zn-Ni=E^o_{Ni^{2+}\text{/}Ni\text{}}-E^o_{Zn^{2+}\text{/}Zn}=-0,257-\left(-0,763\right)=0,506V\)
\(E^o_{pin}Sn-Cu=E^o_{Cu^{2+}\text{/}Cu}-E^o_{sN^{2+}\text{/}Sn}=0,340-\left(-0,138\right)=0,478V\)
So sánh: \(E^o_{pin}Sn-Cu< E^o_{pin}Zn-Ni\)
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