题目:
单选题
用银电极电解 1mol/L Br-、1mol/L CNS-、0.001mol/L Cl-,0.001mol/L IO3-和 0.001 mol/L CrO42-的混合溶液,E(AgBr/Ag) = +0.071V , E (AgCNS/Ag) = +0.09V, E (AgCl/Ag) =+0.222V,E (AgIO3/Ag) = +0.361V, E (Ag2CrO4/Ag) = +0.446V,在银电极上最先析出的为( )
- AAgBr
- BAgCNS
- CAgCl
- DAgIO3
答案:
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