18 Water 2b

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Unformatted text preview: measure an electrical poten5al that reflects the tendency for electrons to leave the solu5on –  We can use the tendency for electrons to be transferred to characterize how strongly reducing condi5ons are Tendency of system to provide electrons to an electron acceptor •  pe = - log 10 [ e- ] (pH = - log 10 [H +]) –  Strong oxidizing environment: posi5ve pe •  i.e. low tendency to provide e- –  Strong reducing environment: nega5ve pe •  As a measure of the availability of electron acceptors, we use Eh Eh - pe •  Eh scale uses volts to express pe equivalent •  Measures poten5al...
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This note was uploaded on 01/30/2014 for the course ESCI 271 taught by Professor Lisakellman during the Fall '12 term at St. Francis Xavier, Antigonish.

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