The standard cell potential of the following galvanic cell is 1.562 v at 298 k. zn(s) | zn2+(aq) || ag+(aq) | ag(s) what is the cell potential of the following galvanic cell at 298 k? zn(s) | zn2+(aq, 1.00 × 10–3 m) || ag+(aq, 0.150 m) | ag(s)

E = 1.602v

Explanation:

Use the Nernst Equation => E(non-std) = E⁰(std) – (0.0592/n)logQc …

             Zn⁰(s) => Zn⁺²(aq) + 2 eˉ

2Ag⁺(aq) + 2eˉ=> 2Ag⁰(s)          

Zn⁰(s) + 2Ag⁺(aq) => Zn⁺²(aq) + 2Ag(s)

Given E⁰ = 1.562v

Qc = [Zn⁺²(aq)]/[Ag⁺]² = (1 x 10ˉ³)/(0.150)² = 0.044

E = E⁰ -(0.0592/n)logQc = 1.562v – (0.0592/2)log(0.044) = 1.602v

icc, international association for cereal chemistry

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