For the cell reaction- 2 Ce 4- -Co- 2 Ce 3- - Co 3- E cell o cell is 1-89 V- If E Co 3- -Co is -0-28 V- what is the value of E Ce 4- - Ce 3- o -

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Question

For the cell reaction, $2 {C e}^{4 +} + C o \to 2 {C e}^{3 +} + {C o}^{3 +}$ ; $E_{c e l l}^{o}$ cell is $1.89 V$ . If $E_{{C o}^{3 +} / C o}$ is $- 0.28 V$ , what is the value of $E_{{C e}^{4 +} / {C e}^{3 +}}^{o}$ ?

0.28 V

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1.61 V

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2.17 V

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5.29 V

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2 C e^{4 +} + C o \to 2 C e^{3 +} + C o^{2 +}

E_{c e l l}^{o} is 1.89 V

If E_{C o^{2 +} | C o}^{o} is - 0.28 V

E_{C e^{4 +} | C e^{3 +}}^{o}

2 {C e}^{4 +} + C o ⟶ 2 {C e}^{3 +} + {C o}^{2 +}

E_{c e l l}^{0}

E_{{C o}^{2 +} | C o}^{0}

E_{{C o}^{4 +} | {C e}^{3 +}}^{0}

F e^{2 +} + C e^{4 +} ⇌ F e^{3 +} + C e^{3 +}

E_{C e^{4 +} | C e^{3 +}}^{o} = 1.44 V; E_{F e^{3 +} | F e^{2 +}}^{o} = 0.68 V

298 K

A g (s) | A g N O_{3} (0.1 M)

C o (s) | C o^{2 +} (0.01 M)

E_{{A g}^{+} / A g} = + 0.80, E_{C o^{2 +} / C o} = - 0.28 V

^{o}

P t (s) | H_{2} (1 a t m) | H^{+} (? M) | | C l^{-} (1 M) | H g_{2} C l_{2} (s) | H g (l)

E_{C l^{-} / H g_{2} C l_{2} / H g} = 0.28 V

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