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What is the voltage for the nonspontaneous reaction between silver (Ag) and copper (Cu) and their ions?
A. 0.34 - (+0.80)
B. 0.80 - 0.34
C. (-0.34) - 0.80
D. 0.80 + 0.34

Respuesta :

For an non spontaneous reaction between silver (Ag) and copper (Cu) and their ions, Cu is the oxidizing agent while Ag+ is the reducing agent,
The following reactions will take place;
Anode Cu = Cu+2 + 2e-   E= +0.34 volts
Cathode; Ag+ + e = Ag    E = +0.80 volts
The net reaction will be Cu + 2Ag+ = Cu+2 + 2Ag
Thus, the voltage will be
  = +0.80 - (+0.34)

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