Half ReactionEred3 eAl- 1.66 V+2 eBr22 Br+ 1.07 V+2 eCo2+- 0.28 V+Co3 eCr- 0.74 V2 eCu²+Cu+ 0.34 V2 eF22 F+ 2.87 V+2 eFe2+Fe- 0.44 VeFe3+Fe2++ 0.77 V2 eMg?Mg- 2.37 V+2 eNi2+Ni- 0.28 V2 ePb- 0.13 V2 eSn+Sn2*+ 0.15 V2 eZn2+Zn- 0.76 V+++ 5. What is the standard cell potential (Ecel) for the voltaic cell based on the reaction below?Cr3 Fe*3 Fe2+Cr 3+

Reaction: Cr + 3Fe3+ → 3Fe2+ + Cr3+ Half cell reactions: Oxidation: Cr→Cr3+ + 3e- Reduction: Fe3+ + e- → Fe2+Given, ECr3+ΙCr∘=-0.74V EFe3+ΙFe2+∘=0.77V Ecell=Ecathode∘-Eanode∘Ecell=0.77-(-0.74)=1.51V

Answered: 5. What is the standard cell potential…

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5. What is the standard cell potential (Ecel) for the voltaic cell based on the reaction below? Cr 3 Fe* 3 Fe2* Cr 3*

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Question

Half Reaction
Ered
3 e
Al
- 1.66 V
+
2 e
Br2
2 Br
+ 1.07 V
+
2 e
Co2+
- 0.28 V
+
Co
3 e
Cr
- 0.74 V
2 e
Cu²+
Cu
+ 0.34 V
2 e
F2
2 F
+ 2.87 V
+
2 e
Fe2+
Fe
- 0.44 V
e
Fe3+
Fe2+
+ 0.77 V
2 e
Mg?
Mg
- 2.37 V
+
2 e
Ni2+
Ni
- 0.28 V
2 e
Pb
- 0.13 V
2 e
Sn+
Sn2*
+ 0.15 V
2 e
Zn2+
Zn
- 0.76 V
+
+
+

5. What is the standard cell potential (Ecel) for the voltaic cell based on the reaction below?
Cr
3 Fe*
3 Fe2+
Cr 3+

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