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所需常数:R=8.314J,F= 96500 C /mol 1. 计算25°C时氯化银电极Ag|AgCl(固),KCl(0.5mol/L)的平衡电位。已知 :Ag + Cl - →AgCl + e 的 φ 0 =0.222V, 0.5mol/L KCl 溶液的平均活度系数为0.651。 2. 测得电极反应O + 2e → R在25°C时的交换电流密度为2×10 -12 A/cm 2 ,α=0.46。当-1.44V下阴极极化时,电极反应速率为多大?已知电极反应为电子转移步骤控制,未通电时电极电位为-0.68V。
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