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QJEE MAIN 2023
A metal surface of 100 cm2 area has to be coated with nickel layer of thickness 0.001 mm. A current of 2A was passed through...
JEE MainChemistryMedium
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QJEE MAIN 2023
In an electrochemical reaction of lead, at standard temperature, if $\mathrm{E}_{\left(\mathrm{Pb}^{2+} / \mathrm{Pb}\right)}^0=\mathrm{m}$ Volt and $\mathrm{E}_{\left(\mathrm{Pb}^{4+} / \mathrm{Pb}\right)}^0=\mathrm{n}$ Volt, then the value of $...
JEE MainChemistryMedium
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QJEE MAIN 2023
$\mathrm{FeO}_4^{2-} \xrightarrow{+2.2 \mathrm{~V}} \mathrm{Fe}^{3+} \xrightarrow{+0.70} \mathrm{Fe}^{2+} \xrightarrow{-0.45} \mathrm{Fe}^0$
$\mathrm{E}_{\mathrm{FeO}_4^{2-} / \mathrm{Fe}^{2+}}^\theta$ is $\mathrm{x} \times 10^{-3} \mathrm{~V}$
The value of x is ____.
JEE MainChemistryMedium
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QJEE MAIN 2023
The reaction Ea$y occurs in which of the given galvanic cell.
$$
\frac{1}{2} \mathrm{H}_2(\mathrm{~g})+\mathrm{AgCl}(\mathrm{~s}) \rightleftharpoons \mathrm{H}^{+}(\mathrm{aq})+\mathrm{Cl}^{-}(\mathrm{aq})+\mathrm{Ag}(\mathrm{~s})
$$
occurs in which of the given galvanic cell.|
JEE MainChemistryEasy
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QJEE MAIN 2023
The standard electrode potential of M+/M in aqueous solution does not depend on
JEE MainChemistryMedium
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QJEE MAIN 2023
The logarithm of equilibrium constant for the reaction $\mathrm{Pd}^{2+}+4 \mathrm{Cl} \rightleftharpoons \mathrm{PdCl}_4^{2-}$ is $\_\_\_\_$ (Nearest integer) Given: $\frac{2.303 R T}{F}=0.06 \mathrm{~V}$ $$ \begin{array}{ll} \mathrm{Pd}_{(\mathrm{aq})}^{2+}+2 \mathrm{e}^{-}...
JEE MainChemistryMedium
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QJEE MAIN 2023
At what pH, given half cell $\mathrm{MnO}_4^{-}(0.1 \mathrm{M}) \mid \mathrm{Mn}^{2+}(0.001 \mathrm{M})$ will have electrode potential of 1.282 V? _______ (Nearest Integer) Given, $...
JEE MainChemistryMedium
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QJEE-Main_2023
Consider the cell $$ \mathrm{Pt}_{(\mathrm{s})}\left|\mathrm{H}_2(\mathrm{~g}, 1 \mathrm{~atm})\right| \mathrm{H}^{+}(\mathrm{aq}, 1 \mathrm{M})| | \mathrm{Fe}^{3+}(\mathrm{aq}), \mathrm{Fe}^{2+}(\mathrm{aq}) \mid \mathrm{Pt}(\mathrm{~s}) $$ When the potential of the cell is 0.712 V...
JEE MainChemistryMedium
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QJEE MAIN 2023
Consider the cell $ \operatorname{Pt}(\mathrm{s})|\mathrm{H}(\mathrm{~s})(1 \mathrm{~atm})| \mathrm{H}^{+}\left(\mathrm{aq},\left[\mathrm{H}^{+}\right]=1\right) \| \mathrm{Fe}^{3+}(\mathrm{aq}), \mathrm{Fe}^{2+}(\mathrm{aq}) \mid \operatorname{Pt}(\mathrm{s}) $ Given: $\mathrm{E}_{\mathrm{Fe}^{3+} / \mathrm{Fe}^{2+}}^{\infty}=0.771 \mathrm{~V}$ and $...
JEE MainChemistryEasy
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QJEE MAIN 2023
Following figure shows dependence of molar conductance of two electrolytes on concentration. is the limiting molar conductivity.
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