41. Calculate cell potential at 298K for galvanic cell Cd(s) | Cd+ (aq) (0.1M) || H+(aq)(0.1M) | H2(g, 0.5 atm) | Pt E^° Cd+/ Cd= -0.40 V

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298 K

C d (s) | C d_{(a q)} {(0.001 M) | | H^{+}}_{(a q)} (0.01 M) | H_{2} (g), 1 a t m | P t

25^{o} C .

C d^{2 +} (a q, 1 M) ∣ C d (s); E_{C d^{2 +} / C d}^{0} = - 0.40 V

H g_{2} C l_{2} (s) ∣ H g (l) ∣ C l^{-} (a q, 0.1 M); E_{C l^{-} / H g_{2} C l_{2} / H g}^{0} = 0.28 V

2 C r_{(s)} + 3 C d_{(a q)}^{2 +} \to 2 C r_{(a q)}^{3 +} + 3 C d_{(s)}

E_{C r^{3 +} / C r}^{o} = - 0.74

E_{C d^{2 +} / C d}^{o} = - 0.40

(e m f)

C d | C d^{2 +} (0.10 M) ∥ H^{+} (0.20 M) | P t, H_{2} (0.5 a t m)

C d | C d^{2 +} | | A g^{+} | A g

E_{C d^{2 +} | C d}^{o} = - 0.40 V, E_{A g^{o} | A g}^{o} = 0.8 V

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