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Electrochemistry question

2023 · 13 Apr · Shift 2 · Q19

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JEE Main
Chemistry
Electrochemistry
2023 · 13 Apr · Shift 2 · Q19

Electrochemistry question

2023 · 13 Apr · Shift 2 · Q19

JEE MainChemistryElectrochemistryNumerical+4 / −1

At

298 \mathrm{~K}

, the standard reduction potential for

\mathrm{Cu}^{2+} / \mathrm{Cu}

electrode is

0.34 \mathrm{~V}

. Given :

\mathrm{K}_{\mathrm{sp}} \mathrm{Cu}(\mathrm{OH})_{2}=1 \times 10^{-20}

Take

\frac{2.303 \mathrm{RT}}{\mathrm{F}}=0.059 \mathrm{~V}

The reduction potential at

\mathrm{pH}=14

for the above couple is

(-) x \times 10^{-2} \mathrm{~V}

. The value of

x

is

\underline{\hspace{2cm}}

Numerical answer

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