化学,最后一题 100
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5.解: Ag+ + e- =Ag φθ (Ag+/Ag) =0.799V
Ag+ + Br- = AgBr Ksp = 7.7×10-13
c (Ag+) = Ksp/c (Br-) = 7.7×10-13 g/mol
φ (Ag+/Ag) =φθ (Ag+/Ag) +0.0592lgc (Ag+)
= 0.799 V + 0.0592lg (7.7×10-13) =0.083V
Ag+ + Br- = AgBr Ksp = 7.7×10-13
c (Ag+) = Ksp/c (Br-) = 7.7×10-13 g/mol
φ (Ag+/Ag) =φθ (Ag+/Ag) +0.0592lgc (Ag+)
= 0.799 V + 0.0592lg (7.7×10-13) =0.083V
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