For the cell Zn ( s ) | Zn ²⁺( aq ) | M ^ x + ( aq ) | M ( s ), different half cells and their standard electrode potentials are given below: If E _ Zn ²⁺ / Zn ^ =-0.76 ~V , which cathode will give a maximum value of E_ cell ⁰ per electron

Question

For the cell Zn ( s ) | Zn ²⁺( aq ) | M ^ x + ( aq ) | M ( s ), different half cells and their standard electrode potentials are given below: If E _ Zn ²⁺ / Zn ^ =-0.76 ~V , which cathode will give a maximum value of E_ cell ⁰ per electron transferred?

Quantrex Academy · Accepted Answer

Correct answer: A. Ag ⁺ / Ag

Zn +2 Ag ⁺ 2 Ag + Zn ²⁺ (n=2 e⁻ )=0.80-(-0.76)=1.56 ~V for 2 e E _ cell ^ for 1 e⁻= 1.56 2 =0.78 ~V

For the cell Zn ( s ) | Zn ²⁺( aq ) | M ^ x + ( aq ) | M ( s ), different half cells and their standard electrode potentials are given below: If E _ Zn ²⁺ / Zn ^ =-0.76 ~V , which cathode will give a maximum value of E_ cell ⁰ per electron transferred?

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