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Thallium (Tl) is a heavy element used in the electronic industry. The reduction reaction for Tl...

Thallium (Tl) is a heavy element used in the electronic industry. The reduction reaction for Tl is Tl+ + e- ® Tl and its exchange current is j0 = 103´[Tl+]1/2 A/m2 when [Tl+] is measured in mol/dm3.

1) explain why the exchange current has the functional form shown above (hint: look up the derivation of the exchange current in the notes and introduce a necessary modification).

2) Calculate and plot the redox current density for this reaction using (a) the Butler-Volmer equation, (b) the linear and (c) the Tafel approximations at overvoltages h between 0 and - 0.2 V for Tl+ concentrations of 1 mM and 1M. Determine the potential ranges where one of the two approximations provide the actual current

What do you mean by related question?

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Expert Solution

As a matter of practice, all our voltages will be described with respect to the SHE.

queen_honey_blossom answered 1 year ago
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