Which of the following net cell reactions tak | vedclass

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(B) In a galvanic cell,the electrode with the higher reduction potential acts as the cathode,and the one with the lower reduction potential acts as th

Vedclass · Accepted Answer

$H_{2(g)} + Cu^{2+}_{(aq)} \longrightarrow 2H^{+}_{(aq)} + Cu_{(s)}$

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(B) In a galvanic cell,the electrode with the higher reduction potential acts as the cathode,and the one with the lower reduction potential acts as the anode.Given $E^{\circ}(Cu^{2+}/Cu) = +0.34 \ V$ and $E^{\circ}(H^{+}/H_2) = 0.00 \ V$.Since $0.34 \ V > 0.00 \ V$,the copper electrode acts as the cathode (reduction) and the standard hydrogen electrode $(SHE)$ acts as the anode (oxidation).Anode reaction: $H_{2(g)} \longrightarrow 2H^{+}_{(aq)} + 2e^{-}$Cathode reaction: $Cu^{2+}_{(aq)} + 2e^{-} \longrightarrow Cu_{(s)}$Adding these two half-reactions gives the net cell reaction: $H_{2(g)} + Cu^{2+}_{(aq)} \longrightarrow 2H^{+}_{(aq)} + Cu_{(s)}$.

Which of the following net cell reactions takes place in a galvanic cell containing a copper electrode and a standard hydrogen electrode $(SHE)$? Given: $E^{\circ}(Cu^{2+}_{(aq)} \mid Cu_{(s)}) = +0.34 \ V$.

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