Standard reduction potentials for the followi | vedclass

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

Question

(A) To find the standard electrode potential for the reaction $Fe^{3+} + e^{-} \rightarrow Fe^{2+}$, we use the relationship between Gibbs free energy

Vedclass · Accepted Answer

$0.772$

Vedclass · Answer

(A) To find the standard electrode potential for the reaction $Fe^{3+} + e^{-} ightarrow Fe^{2+}$, we use the relationship between Gibbs free energy change $(\Delta G^{\circ})$ and standard electrode potential $(E^{\circ})$, given by $\Delta G^{\circ} = -nFE^{\circ}$. Let the reactions be: $(1) Fe^{3+} + 3e^{-} ightarrow Fe ; \Delta G^{\circ}_{1} = -3 	imes F 	imes (-0.036) = 0.108F$ $(2) Fe^{2+} + 2e^{-} ightarrow Fe ; \Delta G^{\circ}_{2} = -2 	imes F 	imes (-0.44) = 0.88F$ The target reaction is $(1) - (2)$: $Fe^{3+} + e^{-} ightarrow Fe^{2+} ; \Delta G^{\circ}_{3} = \Delta G^{\circ}_{1} - \Delta G^{\circ}_{2} = 0.108F - 0.88F = -0.772F$ Since $\Delta G^{\circ}_{3} = -nFE^{\circ}_{3}$ and $n=1$: $-0.772F = -1 	imes F 	imes E^{\circ}_{3}$ $E^{\circ}_{3} = 0.772 \ V$.

List-$I$	List-$II$
$(A)$ Potential of hydrogen electrode at $pH = 10$	$(I)$ $0.76 \ V$
$(B)$ $Cu^{2+} \| Cu$	$(II)$ $0.059$
$(C)$ $Zn \| Zn^{2+}$	$(III)$ $-0.591 \ V$
$(D)$ $\frac{2.303 RT}{F}$	$(IV)$ $0.337 \ V$
	$(V)$ $-0.76 \ V$

Element	$M^{3+}/M$	$M^{+}/M$
$Al$	$-1.66$	$+0.55$
$Tl$	$+1.26$	$-0.34$

Standard reduction potentials for the following reactions are :
$Fe^{3+} + 3e^{-} \rightarrow Fe ; E^{\circ}_{1} = -0.036 \ V$
$Fe^{2+} + 2e^{-} \rightarrow Fe ; E^{\circ}_{2} = -0.44 \ V$
What will be the standard electrode potential for
$Fe^{3+} + e^{-} \rightarrow Fe^{2+} (in $V$)?$

Similar Questions

What is the oxidation and reduction potential of standard hydrogen electrode?

Arrange the following metals in the order of their decreasing standard electrode potential: $Mg, K, Ba, Ca$.

Consider the following standard electrode potentials ($E^0$ in volts) in aqueous solution. Based on this data,which of the following statements is correct?
Element $M^{3+}/M$ $M^{+}/M$
$Al$ $-1.66$ $+0.55$
$Tl$ $+1.26$ $-0.34$

Given that $E_{O_2/H_2O}^o = +1.23 \ V$; $E_{S_2O_8^{2-}/SO_4^{2-}}^o = 2.05 \ V$; $E_{Br_2/Br^-}^o = +1.09 \ V$; $E_{Au^{3+}/Au}^o = 1.4 \ V$. The strongest oxidizing agent is

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Standard reduction potentials for the following reactions are : $Fe^{3+} + 3e^{-} \rightarrow Fe ; E^{\circ}_{1} = -0.036 \ V$ $Fe^{2+} + 2e^{-} \rightarrow Fe ; E^{\circ}_{2} = -0.44 \ V$ What will be the standard electrode potential for $Fe^{3+} + e^{-} \rightarrow Fe^{2+} (in $V$)?$