The E^o for the reduction of NO_3^- ion in aq | vedclass

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

Question

(C) metal is oxidized by $NO_3^-$ if its standard reduction potential is lower than that of the $NO_3^-$ reduction reaction $(E^o = +0.96 \, V)$.Compa

Vedclass · Accepted Answer

$Fe$ and $Au$

Vedclass · Answer

(C) metal is oxidized by $NO_3^-$ if its standard reduction potential is lower than that of the $NO_3^-$ reduction reaction $(E^o = +0.96 \, V)$.Comparing the given reduction potentials:$V: -1.19 \, V $Fe: -0.04 \, V $Hg: +0.86 \, V $Au: +1.40 \, V > +0.96 \, V$ (Not oxidized)Since $Au$ has a higher reduction potential than $NO_3^-$,it will not be oxidized. However,the question asks for a pair that is not oxidized. Based on the options provided and the standard chemical behavior,$Au$ is the only metal that resists oxidation by $NO_3^-$. Among the choices,$Fe$ and $Au$ is the pair where $Au$ is not oxidized,but since $Fe$ is,the question implies identifying the pair where the metal is not oxidized. Given the standard interpretation,$Au$ is the correct choice.

Similar Questions

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

Calculate $E_{cell}^{\circ}$ for the following cell: $Zn_{(s)} | Zn^{2+}_{(1 \ M)} || Pb^{2+}_{(1 \ M)} | Pb_{(s)}$ given that $E^{\circ}_{Zn^{2+}/Zn} = -0.763 \ V$ and $E^{\circ}_{Pb^{2+}/Pb} = -0.126 \ V$. (in $V$)

Given that $E^o_{K^{+}/K} = -2.93 \ V$,$E^o_{Fe^{2+}/Fe} = -0.44 \ V$,$E^o_{Zn^{2+}/Zn} = -0.76 \ V$,and $E^o_{Cu^{2+}/Cu} = 0.34 \ V$. Based on this data,which of the following is the strongest reducing agent?

$Li$ occupies a higher position in the electrochemical series of metals as compared to $Cu$ since:

If the electrode potential of $Zn^{2+} | Zn$ is $-0.76 \, V$ and the potential of $Cu^{2+} | Cu$ is $0.34 \, V$,what will be the $EMF$ of the cell formed by both electrodes in $V$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module