(D) In a Galvanic cell,the electrode with the higher reduction potential acts as the cathode (positive electrode),and the electrode with the lower red

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$2H^{+}_{(aq)} + 2e^{-} \longrightarrow H_{2(g)}$

(D) In a Galvanic cell,the electrode with the higher reduction potential acts as the cathode (positive electrode),and the electrode with the lower reduction potential acts as the anode (negative electrode). Given $E^{\circ}(Zn^{+2}/Zn) = -0.76 \ V$ and $E^{\circ}(H^{+}/H_2) = 0.00 \ V$. Since $0.00 \ V > -0.76 \ V$,the standard hydrogen electrode acts as the cathode (positive electrode). Reduction occurs at the cathode: $2H^{+}_{(aq)} + 2e^{-} \longrightarrow H_{2(g)}$.

Class 12 Chemistry Electrochemistry Electrode potential and ECell

Medium

For a Galvanic cell consisting of a zinc electrode and a standard hydrogen electrode,$E^{\circ}(Zn^{+2}_{(aq)} \mid Zn_{(s)}) = -0.76 \ V$. Identify the reaction that takes place at the positive electrode during the working of the cell.

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A
$Zn_{(s)} \longrightarrow Zn^{+2}_{(aq)} + 2e^{-}$
B
$Zn^{+2}_{(aq)} + 2e^{-} \longrightarrow Zn_{(s)}$
C
$H_{2(g)} \longrightarrow 2H^{+}_{(aq)} + 2e^{-}$
D
$2H^{+}_{(aq)} + 2e^{-} \longrightarrow H_{2(g)}$

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For a Galvanic cell consisting of a zinc electrode and a standard hydrogen electrode,$E^{\circ}(Zn^{+2}_{(aq)} \mid Zn_{(s)}) = -0.76 \ V$. Identify the reaction that takes place at the positive electrode during the working of the cell.

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The standard reduction potentials of three metals $A, B,$ and $C$ are $+0.5 \, V, -3.0 \, V,$ and $-1.2 \, V$ respectively. What is the order of their reducing power?

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The correct order of reduction potentials of the following pairs is
$A.$ $Cl_2 / Cl^{-}$
$B.$ $I_2 / I^{-}$
$C.$ $Ag^{+} / Ag$
$D.$ $Na^{+} / Na$
$E.$ $Li^{+} / Li$
Choose the correct answer from the options given below.