2e- → Cu + E1= 1.128V Cu +→ Cu2+ + e- E2= - 0.15V
Given the following half-reactions and their respective standard reduction potentials
1.) Cu3+ + 2e- ---> Cu+....E1= 1.128V
2.) Cu2+ + e- ---> Cu+....E2=0.15V
3.) Cu2+ + 2e- ---> Cu(s)....E3=0.34V
4.) Cu3+ + 2e- ---> Cu+....E4=0.52V
calculate the standard reduction potential for the reduction half-reaction of Cu(III) to Cu(II).
Cu3+ + e- ---> Cu2+ E= ? V
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