# Problem: An electrochemical cell consists of a silver metal electrode immersed in a solution with [Ag +] = 1.0 M separated by a porous disk from a copper metal electrode. If the copper electrode is placed in a solution of 5.0 M NH3 that is also 0.010 M in Cu(NH 3)4 2+, what is the cell potential at 25°C?Cu2+(aq) + 4NH3 (aq) ⇌ Cu(NH 3)4 2+(aq)          K = 1.0 X 10 13

###### FREE Expert Solution

Step 1

[Cu2+] = 1.6x10-18 M

Step 2

Cu2+ (aq) + 2 e- Cu (s)       E° = 0.34 V           E oxidation anode

Ag+ (aq) + e- Ag (s)            E° = 0.80 V           E reduction cathode

Step 3

cell = 0.46 V

Step 4

Cu (s) Cu2+ (aq) + 2 e-

[Ag+ (aq) + e- Ag (s)] x2

2 Ag+ (aq)  + Cu (s) Cu2+ (aq) + 2 Ag (s)

n = 2 ###### Problem Details

An electrochemical cell consists of a silver metal electrode immersed in a solution with [Ag +] = 1.0 M separated by a porous disk from a copper metal electrode. If the copper electrode is placed in a solution of 5.0 M NH3 that is also 0.010 M in Cu(NH 3)4 2+, what is the cell potential at 25°C?

Cu2+(aq) + 4NH3 (aq) ⇌ Cu(NH 3)4 2+(aq)          K = 1.0 X 10 13