Chemistry: E (0) From Reduction?

2020-04-06 10:06 am
Please help!!

回答 (1)

2020-04-06 11:04 am
A)
E°(cell)
= E°(reduction) - E°(oxidation)
= E°(S₂O₈²⁻|SO₄²⁻) - E°(I₂|I⁻)
= (2.01 - 0.53) V
= 1.48 V

B)
E°(cell)
= E°(reduction) - E°(oxidation)
= E°(Cr₂O₇²⁻,H⁺|Cr³⁺) - E°(I₂|I⁻)
= (1.33 - 0.53) V
= 0.80 V

C)
E°(cell)
= E°(reduction) - E°(oxidation)
= E°(S₂O₈²⁻|SO₄²⁻) - E°(Cr₂O₇²⁻,H⁺|Cr³⁺)
= (2.01 - 1.33) V
= 0.68 V


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