Which species is the best reducing agent?   E° (V) S2O62-(aq)  +  4 H+(aq)  +  2 e−   ➝   2 H2SO3(aq) +0.569  Fe3+(aq)  +  e−   ➝   Fe2+(aq) +0.771 VO2+(aq)  + 2 H+(aq)  +  e−   ➝   VO2+(aq)  +  H2O(ℓ) +1.00 N2O(aq)  +  2 H+(aq)  + 2 e−   ➝   N2(g)  +  H2O(ℓ)

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Which species is the best reducing agent?

  E° (V)
S2O62-(aq)  +  4 H+(aq)  +  2 e   ➝   2 H2SO3(aq) +0.569
 Fe3+(aq)  +  e   ➝   Fe2+(aq) +0.771
VO2+(aq)  + 2 H+(aq)  +  e   ➝   VO2+(aq)  +  H2O(ℓ) +1.00
N2O(aq)  +  2 H+(aq)  + 2 e   ➝   N2(g)  +  H2O(ℓ) +1.77
Group of answer choices

N2

VO2+

H2SO3

Fe2+

S2O62−

VO2+

Fe3+

 

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