What is the potential of a galvanic cell made up of Cd/Cd2+ and Ag/Ag+ half-cells at...

What is the potential of a galvanic cell made up of Cd/Cd²⁺ and Ag/Ag⁺ half-cells at 25

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Expert Solution

The cell reaction is Cd + 2Ag⁺ Cd²⁺ + 2Ag : E⁰ = E⁰_Ag+/Ag - E⁰_{Cd2+ /
Cd}

= +0.7996 -(-0.40 ) V

= +1.1996 V

Where n = number of electrons transferred = 2

$E_{cell}^{o}=E^{o}-\frac{0.059}{n}log\frac{\left [Cd^{2+}]}{\left [Ag^{+}]}$

Therefore the potential of a galvanic cell is +1.178 V

queen_honey_blossom answered 3 weeks ago

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