chemistry question

質問

How do we know this solution Cu(s)+2AgNO3(aq) to 2Ag(s)+Cu(NO3)2(aq) is activity-series?

回答No.1

asitakahikoya

You can learn this reaction to calculate reduction potential.
This reaction is made by this two oxidation reduction reaction.
(1)Cu(2+)+2e(-)→Cu ΔE=0.34V
(2)Ag(+)+e(-)→Ag ΔE=0.79V
So,you can know the reduction potential of this reaction by (2)×2-(1).
ΔE=0.79×2-0.34=1.24
Positive ΔE produces a forward reaction and you can know the reason.