Strength of Reducing Agents

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Nada AbouHaiba 1I
Posts: 77
Joined: Fri Sep 28, 2018 12:28 am
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Strength of Reducing Agents

Postby Nada AbouHaiba 1I » Wed Feb 27, 2019 10:43 pm

I know you want to look at the most negative reduction potential in order to find which is the strongest reducing agent, but how do you know which equation to use if there are several that have that same metal in the back?

14.25 Arrange the following metals in order of increasing strength as reducing agents for species in aqueous solution: (a) Cu, Zn, Cr, Fe; (b) Li, Na, K, Mg; (c) U, V, Ti, Al;(d) Ni, Sn, Au, Ag.

this is the question I'm trying to answer. For example in part A Fe has two possible equations we can refer to

Albert_Luu3K
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am

Re: Strength of Reducing Agents

Postby Albert_Luu3K » Thu Feb 28, 2019 1:41 am

What I would is make sure all the half reaction reduction potential numbers are coming from similar set up equations, meaning that make sure all the equations start off with same neutral element and it goes to the same oxidation state. For example Fe^2+ + 2e- --> Fe and Cu^2+ + 2e- ---> Cu. That makes sure that there will be a consistent basis for comparing the relative reduction potentials.


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