問題詳情
22. An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode. What is the potential of thecell at 25℃ if the copper electrode is placed in a solution in which [Cu2+] = 2.5 × 10-4 M. [Note: Cu2+(aq) + 2e-→Cu(s), E0= 0.34 V]
(A)0.23 V
(B)-0.16 V
(C)0.018 V
(D) 0.26 V
(E)0.059 V
參考答案
答案：A
難度：困難0.227273
統計：A(5),B(4),C(3),D(6),E(1)