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Electrochemistry question

2023 · 6 Apr · Shift 2 · Q17

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JEE Main
Chemistry
Electrochemistry
2023 · 6 Apr · Shift 2 · Q17

Electrochemistry question

2023 · 6 Apr · Shift 2 · Q17

JEE MainChemistryElectrochemistryNumerical+4 / −1

The standard reduction potentials at

298 \mathrm{~K}

for the following half cells are given below:

\mathrm{NO}_{3}^{-}+4 \mathrm{H}^{+}+3 \mathrm{e}^{-} \rightarrow \mathrm{NO}(\mathrm{g})+2 \mathrm{H}_{2} \mathrm{O} \quad \mathrm{E}^{\theta}=0.97 \mathrm{~V}\mathrm{V}^{2+}(\mathrm{aq})+2 \mathrm{e}^{-} \rightarrow \mathrm{V} \quad\quad\quad \mathrm{E}^{\theta}=-1.19 \mathrm{~V}\mathrm{Fe}^{3+}(\mathrm{aq})+3 \mathrm{e}^{-} \rightarrow \mathrm{Fe} \quad\quad\quad \mathrm{E}^{\theta}=-0.04 \mathrm{~V}\mathrm{Ag}^{+}(\mathrm{aq})+\mathrm{e}^{-} \rightarrow \mathrm{Ag}(\mathrm{s}) \quad\quad\quad \mathrm{E}^{\theta}=0.80 \mathrm{~V}\mathrm{Au}^{3+}(\mathrm{aq})+3 \mathrm{e}^{-} \rightarrow \mathrm{Au}(\mathrm{s}) \quad\quad\quad \mathrm{E}^{\theta}=1.40 \mathrm{~V}

The number of metal(s) which will be oxidized by

\mathrm{NO}_{3}^{-}

in aqueous solution is

\underline{\hspace{2cm}}

.

Numerical answer

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