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Electrochemistry: JEE Mains 2022 June 29 Shift 2

Hard· Nernst equation· +4 / 0

The cell potential for the given cell at

298\ \text{K}

\mathrm{Pt\,|\,H_2(g,\,1\ bar)\,|\,H^+(aq)\,||\,Cu^{2+}(aq)\,|\,Cu(s)}

is

0.31\ \text{V}

. The pH of the acidic solution is found to be

3

, whereas the concentration of

\mathrm{Cu^{2+}}

is

10^{-x}\ \text{M}

. The value of

x

is ______. (Given :

E^{\ominus}_{Cu^{2+}/Cu}=0.34\ \text{V}

and

\dfrac{2.303RT}{F}=0.06\ \text{V}

)

Your answer (numerical)

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