If E F e 2 + | F e o = - 0.44 V , E F e 3 + | F e 2 + o = 0.77 V . The value of E F e 3 + | F e o is

Question

If E F e 2 + | F e o = - 0.44 V , E F e 3 + | F e 2 + o = 0.77 V . The value of E F e 3 + | F e o is, 0.33 V, -0.0367V, 0.11V, -0.11V

MARKS App · Accepted Answer

Fe 2+ +2e − → Fe; ΔG 1 = − 2F − 0 .44 A =ZaCO 3 =FeCO 3 Fe 3+ +e − → Fe 2+ ; ΔG 2 = − F 0 .77 So, Fe 3+ +3e − → Fe; ΔG = − 3F(E) = ΔG 1 +ΔG 2 E = - 0.0367 V

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