Consider the following cell reaction: 2Fe(s) + O2(g) + 4H+(aq) → 2Fe2+(aq) + 2H2O(l); E° =1.67 V At [Fe2+] = 10-3 M, p(O2) = 0.1 atm and pH = 3, the cell potential at 25ºC is (a) 1.47 V (b) 1.77 V (c) 1.87 V (d) 1.57 V

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Consider the following cell reaction: 2Fe(s) + O2(g) + 4H^+(aq) → 2Fe^2+(aq) + 2H2O(l); E° =1.67 V

Electrochemistry

Last Post by Freddie12 5 years ago

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04/10/2020 12:04 pm

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Shaneylee18

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Consider the following cell reaction:

2Fe(s) + O₂(g) + 4H⁺(aq) → 2Fe²⁺(aq) + 2H₂O(l); E° =1.67 V

At [Fe²⁺] = 10^-3

M, p(O₂) = 0.1 atm and pH = 3, the cell potential at 25ºC is

(a) 1.47 V

(b) 1.77 V

(d) 1.57 V

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neet electrochemistry

1 Answer

04/10/2020 12:06 pm

Freddie12

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(d) 1.57 V

Explanation:

Here n = 4, and [H⁺] = 10^-3 (as pH = 3)

Applying Nernst equation

2s.png

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Consider the following cell reaction: 2Fe(s) + O2(g) + 4H^+(aq) → 2Fe^2+(aq) + 2H2O(l); E° =1.67 V

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