Arranging in order of increasing strength

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Nayiri
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Joined: Fri Sep 20, 2013 3:00 am

Arranging in order of increasing strength

Postby Nayiri » Mon Feb 10, 2014 8:08 pm

How would you arrange the following metals in order of increasing strength as reducing agents for species in aqueous solution? And how do you know how to order them?

a) Cu, Zn, Cr, Fe
b) Li, Na, K, Mg
c) U, V, Ti, Al

Chem_Mod
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Re: Arranging in order of increasing strength

Postby Chem_Mod » Mon Feb 10, 2014 9:22 pm

You have to look at the reduction potentials for each, there is no other nontrivial systematic way to determine this a priori. Remember what it means to have a large reduction potential vs. a small reduction potential.

104277942
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Joined: Fri Sep 20, 2013 3:00 am

Re: Arranging in order of increasing strength

Postby 104277942 » Mon Feb 10, 2014 9:50 pm

Reducing agents really want to be oxidized, therefore, their REDUCTION POTENTIALS will be very, very low. So the lowest reduction potentials will be the best reducing agents because they want to be oxidized.

AtreyiMitra2L
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Re: Arranging in order of increasing strength

Postby AtreyiMitra2L » Sun Feb 18, 2018 6:26 pm

but even then, when you look them up there seem to be several possible values. How do you know which one to use.


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