The standard reduction potential data at 25∘C is given below. E∘(F

1.	The standard reduction potential data at 25∘C is given below. E∘(Fe3+/Fe2+)=0.77 V;E∘(Fe2+/Fe)=−0.44V;E∘(Cu2+/Cu)=0.34 V;E∘(Cu+/Cu)=+0.52V;E∘(O2(g)+4H++4e−)→2H2O=+1.23V;E∘(O2(g)+2H2O+4e−)→4OH−=+0.40VE∘(Cr3+/Cr)=−0.74 V;E∘(Cr2+/Cr)=+0.91V Match E∘ of the rebox pair in Column I with the values given in Column II and select the correct answer using the code given below the lists. Column IColumn IIP.E∘(Fe3+/Fe)1.−0.18VQ.E∘(4H2O⇌4H++4OH−)2.−0.4VR.E∘(Cu2++Cu→2Cu+)3.−0.04VS.E∘(Cr3+/Cr2+)4.−0.83V
Answer» The standard reduction potential data at $25^{\circ} C$ is given below. $E^{\circ} (F e^{3 +} / F e^{2 +}) = 0.77 V; E^{\circ} (F e^{2 +} / F e) = - 0.44 V; E^{\circ} (C u^{2 +} / C u) = 0.34 V; E^{\circ} (C u^{+} / C u) = + 0.52 V; E^{\circ} (O_{2} (g) + 4 H^{+} + 4 e^{-}) \to 2 H_{2} O = + 1.23 V; E^{\circ} (O_{2} (g) + 2 H_{2} O + 4 e^{-}) \to 4 O H^{-} = + 0.40 V E^{\circ} (C r^{3 +} / C r) = - 0.74 V; E^{\circ} (C r^{2 +} / C r) = + 0.91 V$ Match $E^{\circ}$ of the rebox pair in Column I with the values given in Column II and select the correct answer using the code given below the lists. $\begin{matrix} C o l u m n I & C o l u m n I I P . E^{\circ} (F e^{3 +} / F e) & 1. - 0.18 V Q . E^{\circ} (4 H_{2} O ⇌ 4 H^{+} + 4 O H^{-}) & 2. - 0.4 V R . E^{\circ} (C u^{2 +} + C u \to 2 C u^{+}) & 3. - 0.04 V S . E^{\circ} (C r^{3 +} / C r^{2 +}) & 4. - 0.83 V \end{matrix}$

The standard reduction potential data at 25∘C is given below. E∘(Fe3+/Fe2+)=0.77 V;E∘(Fe2+/Fe)=−0.44V;E∘(Cu2+/Cu)=0.34 V;E∘(Cu+/Cu)=+0.52V;E∘(O2(g)+4H++4e−)→2H2O=+1.23V;E∘(O2(g)+2H2O+4e−)→4OH−=+0.40VE∘(Cr3+/Cr)=−0.74 V;E∘(Cr2+/Cr)=+0.91V Match E∘ of the rebox pair in Column I with the values given in Column II and select the correct answer using the code given below the lists. Column IColumn IIP.E∘(Fe3+/Fe)1.−0.18VQ.E∘(4H2O⇌4H++4OH−)2.−0.4VR.E∘(Cu2++Cu→2Cu+)3.−0.04VS.E∘(Cr3+/Cr2+)4.−0.83V

Answer»

The standard reduction potential data at $25^{\circ} C$ is given below.

$E^{\circ} (F e^{3 +} / F e^{2 +}) = 0.77 V; E^{\circ} (F e^{2 +} / F e) = - 0.44 V; E^{\circ} (C u^{2 +} / C u) = 0.34 V; E^{\circ} (C u^{+} / C u) = + 0.52 V; E^{\circ} (O_{2} (g) + 4 H^{+} + 4 e^{-}) \to 2 H_{2} O = + 1.23 V; E^{\circ} (O_{2} (g) + 2 H_{2} O + 4 e^{-}) \to 4 O H^{-} = + 0.40 V E^{\circ} (C r^{3 +} / C r) = - 0.74 V; E^{\circ} (C r^{2 +} / C r) = + 0.91 V$

Match $E^{\circ}$ of the rebox pair in Column I with the values given in Column II and select the correct answer using the code given below the lists.

$\begin{matrix} C o l u m n I & C o l u m n I I P . E^{\circ} (F e^{3 +} / F e) & 1. - 0.18 V Q . E^{\circ} (4 H_{2} O ⇌ 4 H^{+} + 4 O H^{-}) & 2. - 0.4 V R . E^{\circ} (C u^{2 +} + C u \to 2 C u^{+}) & 3. - 0.04 V S . E^{\circ} (C r^{3 +} / C r^{2 +}) & 4. - 0.83 V \end{matrix}$

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