Standard potential of electrode reaction Cu^{ | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The given reaction is the reduction of $Cu^{2+}$ to $Cu_{(s)}$: $Cu^{2+}_{(aq)} + 2e^{-} \rightarrow Cu_{(s)}$ with $E^{\circ} = +0.34 \ V$. The r

Vedclass · Accepted Answer

$-0.34 \ V$

Vedclass · Answer

(D) The given reaction is the reduction of $Cu^{2+}$ to $Cu_{(s)}$: $Cu^{2+}_{(aq)} + 2e^{-} \rightarrow Cu_{(s)}$ with $E^{\circ} = +0.34 \ V$. The requested reaction is the oxidation of $Cu_{(s)}$ to $Cu^{2+}_{(aq)}$: $2Cu_{(s)} \rightarrow 2Cu^{2+}_{(aq)} + 4e^{-}$. This is the reverse of the reduction reaction multiplied by a factor of $2$. Since the standard electrode potential $(E^{\circ})$ is an intensive property,it does not depend on the stoichiometric coefficients of the reaction. Therefore,reversing the reaction changes the sign of the potential,but multiplying the coefficients does not change the value of $E^{\circ}$. Thus,the potential for the oxidation reaction $Cu_{(s)} \rightarrow Cu^{2+}_{(aq)} + 2e^{-}$ is $-0.34 \ V$. The potential for $2Cu_{(s)} \rightarrow 2Cu^{2+}_{(aq)} + 4e^{-}$ remains $-0.34 \ V$.

Standard potential of electrode reaction $Cu^{2+}_{(aq)} + 2e^{-} \rightarrow Cu_{(s)}$ is $+0.34 \ V$. What is the standard potential of the reaction $2Cu_{(s)} \rightarrow 2Cu^{2+}_{(aq)} + 4e^{-}$?

Similar Questions

The standard electrode potential $(E^{\circ}_{M^{3+}/M^{2+}})$ for $V$,$Cr$,$Mn$,and $Co$ are $-0.26 \ V$,$-0.41 \ V$,$+1.57 \ V$,and $+1.97 \ V$,respectively. The metal ions which can liberate $H_2$ from a dilute acid are

According to standard electrode potential,which is the strongest reducing agent and oxidising agent?
$Al (-1.66 \ V), Cu (+0.34 \ V), Li (-3.05 \ V), Ag (+0.80 \ V)$

The reduction potential values of $A, B, C$ are $0.34 \ V, -0.80 \ V, -0.46 \ V$ respectively. What will be the order of the strength of the reducing agent?

On the basis of the following electrode potentials,which one is the strongest reducing agent?
$E^0_{Cr_2O_7^{2-}/Cr^{3+}} = 1.33 \text{ V}$,$E^0_{MnO_4^-/Mn^{2+}} = 1.51 \text{ V}$,$E^0_{Br_2/Br^{-}} = 1.09 \text{ V}$,$E^0_{Zn^{2+}/Zn} = -0.76 \text{ V}$

Calculate the $emf$ of the cell $Cu_{(s)} | Cu^{2+}_{(aq)} || Ag^+_{(aq)} | Ag_{(s)}$. Given: $E^0_{Cu^{2+}/Cu} = +0.34 \ V$,$E^0_{Ag^+/Ag} = +0.80 \ V$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module