34- Consider the tollowing cell reaction-2Fe -s- 02-g- - 4H -aq- 2Fe -aq- -2H20 -1- E- 1-67VAt Fe21 103 M- p-02- 0-1 atm and pH -3-the cell potential at 25 C isa- 1-47 V b- 1-77 V c- 1-87V d-1-57 V

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Application of Electrolysis

34) Consider ...

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34) Consider the tollowing cell reaction:2Fe (s) 02(g) + 4H (aq) 2Fe (aq) +2H20 (1); E^° 1.67VAt \lbrack Fe21 103 M, p(02) 0.1 atm and pH -3,the cell potential at 25 C isa) 1.47 V b) 1.77 V c) 1.87V d)1.57 V

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2 F e (s) + O_{2} (g) + 4 H^{+} (a q) \to 2 F e^{2 +} (a q) + 2 H_{2} O (l)

E^{-} = 1.67 V

[F e^{2 +}] = 10^{- 3} M, p (O_{2}) = 0.1

p H

3

25^{0}

2 F e (s) + O_{2} (g) + 4 H^{+} (a q) \to 2 F e^{2 +} (a q) + 2 H_{2} O (l), E^{o} = 1.67 V

[F e^{2 +}] = 10^{- 3} M, P (O_{2}) = 0.1

p H = 3

25^{o}

2 F e (s) + O_{2} (g) + 4 H^{+} (a q) \to 2 F e^{2 +} (a q) + 2 H_{2} O (l); E^{\circ} = 1.67 V

[F e^{2 +}] = 10^{- 3} M, P_{(O_{2})} = 0.1 a t m

25^{\circ} C

\frac{2.303 R T}{F} = 0.0591

2 F e (s) + O_{2} (g) + 4 H^{+} (a q) \to 2 F e^{2 +} (a q) + 2 H_{2} O (l); E^{\circ} = 1.67 V

[F e^{2 +}] = 10^{- 3} M, P_{(O_{2})} = 0.1 a t m

25^{\circ} C

\frac{2.303 R T}{F} = 0.0591

2 F e_{(a q)}^{3 +} + 2 I_{(a q)}^{-} \to 2 F e_{(a q)}^{2 +} + I_{2 (s)}

E_{c e l l}^{o} = 0.236 V

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