Question

Equilibrium constant K is related to $Eº_{Cell}$ and not $E_{cell}$ because

• A. $Eº_{Cell}$ is easier to measure than $E_{Cell}$
• B. $E_{cell}$ becomes zero at equilibrium point but $Eº_{Cell}$ remains constant under all conditions
• C. At a given temperature $E_{cell}$ changes hence value of K can’t be measured
• D. Any of the terms $E_{cell}$ or $Eº_{cell}$ can be used.

Answer 1

Answer: (B)

$E_{cell}$ becomes zero at equilibrium point but $Eº_{Cell}$ remains constant under all conditions

Answer 2

At equilibrium $E_{cell}$ becomes zero which means no current is generated by the cell at his point $Eº_{cell}$ remains constant hence equilibrium constant is related to $Eº_{cell}$