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在银-氯化银电极AgCl(s)====Ag(s)+Cl-,加入NaCl溶液后电极的ΦAgCl⼀Ag( ) 是增大、减少,还是不变?
在银-氯化银电极AgCl(s)====Ag(s)+Cl-,加入NaCl溶液后电极的ΦAgCl⼀Ag( ) 是增大、减少,还是不变?
2025-03-15 03:23:35
推荐回答(1个)
回答1:
电极电势减小。
由能斯特方程:
Φ(AgCl/Ag ) = Φθ(AgCl/Ag ) + 0.0592 lg 1/[ Cl- ]
加入Cl-,还原型物种[ Cl- ]浓度增大,电极电势减小
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