What is the standard electrode (half-cell) potential? Give its uses.
(N/A) Standard electrode (half-cell) potential: Under standard conditions,which include a temperature of $298 \ K$,a gas pressure of $1 \ bar$,and a solution concentration of $1 \ M$,the reduction potential of an electrode (half-cell) is defined as the standard electrode potential,measured in volts $(V)$.
Uses:
$(i)$ Construction of the electrochemical series ($EMF$ series): When half-cell reactions are arranged in decreasing order of their standard reduction potential,the resulting series is known as the electrochemical series. This series helps in predicting the spontaneity of redox reactions and the relative strength of oxidizing and reducing agents.
Uses:
$(i)$ Construction of the electrochemical series ($EMF$ series): When half-cell reactions are arranged in decreasing order of their standard reduction potential,the resulting series is known as the electrochemical series. This series helps in predicting the spontaneity of redox reactions and the relative strength of oxidizing and reducing agents.
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Similar Questions
The standard reduction potential for $Fe^{2+}/Fe$ and $Sn^{2+}/Sn$ electrodes are $-0.44 \ V$ and $-0.14 \ V$ respectively. For the cell reaction,$Fe^{2+} + Sn \longrightarrow Fe + Sn^{2+}$,the standard emf is:
If $E^{\circ}(Fe^{+2}_{(aq)} \mid Fe_{(s)}) = -0.44 \ V$ and $E^{\circ}(Sn^{+2}_{(aq)} \mid Sn_{(s)}) = -0.14 \ V$,what is the standard $emf$ of the cell containing the two electrodes?
Which metal does not give the following reaction? $M + \text{water} \rightarrow \text{oxide or hydroxide} + H_2$
Easy
View SolutionThe standard reduction potential at $298 \ K$ for the following half-cell reactions is given as:
$Zn^{2+}_{(aq)} + 2e^{-} \rightarrow Zn_{(s)} ; \quad E^{\circ} = -0.762 \ V$
$Cr^{3+}_{(aq)} + 3e^{-} \rightarrow Cr_{(s)} ; \quad E^{\circ} = -0.740 \ V$
$2H^{+}_{(aq)} + 2e^{-} \rightarrow H_{2(g)} ; \quad E^{\circ} = 0.0 \ V$
$F_{2(g)} + 2e^{-} \rightarrow 2F^{-}_{(aq)} ; \quad E^{\circ} = 2.87 \ V$
Which of the following is the strongest reducing agent?
$Zn^{2+}_{(aq)} + 2e^{-} \rightarrow Zn_{(s)} ; \quad E^{\circ} = -0.762 \ V$
$Cr^{3+}_{(aq)} + 3e^{-} \rightarrow Cr_{(s)} ; \quad E^{\circ} = -0.740 \ V$
$2H^{+}_{(aq)} + 2e^{-} \rightarrow H_{2(g)} ; \quad E^{\circ} = 0.0 \ V$
$F_{2(g)} + 2e^{-} \rightarrow 2F^{-}_{(aq)} ; \quad E^{\circ} = 2.87 \ V$
Which of the following is the strongest reducing agent?
Arrange the following metals in the order in which they displace each other from the solution of their salts: $Al, Cu, Fe, Mg$ and $Zn$.
Medium
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