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  4. The cell reaction involving quinhydrone electrode is :- <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/c-wbwphsf2j69ykn6l.jpg /> What will be the electrode potential at pH=3

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Q. The cell reaction involving quinhydrone electrode is :-
Question
What will be the electrode potential at $pH=3$

NTA AbhyasNTA Abhyas 2022

Solution:

$E=E^\circ -\frac{0 . 0592}{n}log\left[H^{+}\right]^{2}$
$=1.30-2\times \frac{0 . 0592}{2}log\left[H^{+}\right]$
$=1.30+pH\times 0.0592$
$=1.48\,V$