Standard Potential of a couple

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Sophia Kim 1C
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Standard Potential of a couple

Postby Sophia Kim 1C » Tue Feb 20, 2018 11:09 pm

Can someone explain why the more negative the standard potential of a couple the greater its reducing strength and vice versa?

Abel Thomas 2C
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Re: Standard Potential of a couple

Postby Abel Thomas 2C » Tue Feb 20, 2018 11:18 pm

The book states: "The more negative the potential, the greater is the electron-donating power of the oxidation half-reaction and therefore the more strongly reducing the redox couple (that is, the stronger the tendency for the half-reaction to occur as an oxidation)".

Michelle Dong 1F
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Re: Standard Potential of a couple

Postby Michelle Dong 1F » Tue Feb 20, 2018 11:36 pm

So the standard potential in general states how likely a half reaction will become reduced. So, the higher the standard potential, the more likely the half reaction will reduce (and thus act as the oxidizing agent because it oxidizes the other half reaction). Therefore, the more negative the standard potential, the more likely it is the half reaction will become oxidized, which reduces the other half reaction (acting as the reducing agent, meaning it has increased reducing strength).

Ilan Shavolian 1K
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Joined: Fri Sep 29, 2017 7:03 am

Re: Standard Potential of a couple

Postby Ilan Shavolian 1K » Wed Feb 21, 2018 12:55 am

"more negative" is just kind of a weird concept to understand. It just means it has more of a negative "push" on the electrons, giving the stronger reduction


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