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I dont understand what the nernst equations is so i dont know how to solve this...

I dont understand what the nernst equations is so i dont know how to solve this question.

Under what conditions is the Nernst equation used to calculate cell potential voltages in a voltaic cell?

A. non-standard concentration only

B. non-spontaneous reactions only

C. reactions at equilibrium only

D. the reaction of ions with the same charge only
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Answer #1

Nernst equation relates the Electrode potential (Ecell) of a cell formed by two electrodes, under given conditions with the concentrations of their electrolytes in the electrode chambers.

It is mathematically given as

Eocell is the standard cell potential i.e. when the elwctrodes are dipped in 1M electrolyte solution.

So, correct answer is A. Non standard conditions only.

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