Calculate the Standard Reduction potential of Substance B when e = -0.62 V at 25 °C;...

Calculate the Standard Reduction potential of Substance B when e = -0.62 V at 25 °C; [B_reduced] = 50 µM, and [B_oxidized] = 2 µM. Assume that n = 2.

Solutions

Expert Solution

Ecell = E0cell -RT/nF lnKeq

= E0cell -2.303RT/nF log[reduced form]/[oxidized form]

R = 8.314Joulemole-K

T 25+273 = 298K

F = 96500c

Ecell = E0cell - 2.303*8.314*298/n*96500 log[reduced form]/[oxidized form]

Ecell = E0cell - 0.0592/n log[reduced form]/[oxidized form]

n = 2

Ecell = -0.62v

[B_reduced] = 50 µM, and [B_oxidized] = 2 µM

-0.62 = E0cell - 0.0592/2 log50/2

-0.62 = E0cell -0.0296*1.3979

E0cell = -0.58v

queen_honey_blossom answered 1 year ago

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