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For the galva...

Question

For the galvanic cell pictured below, determine the electrochemical potential for the system at $25^{\circ} C$ :
Note: $C u_{(a q)}^{2 +} + 2 e^{-} \to C u_{(s)} E^{\circ} = 0.337 V$
$Z n_{(a q)}^{2 +} + 2 e^{-} \to Z n_{(s)} E^{\circ} = - 0.763 V$

- 0.426 V

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- 1.10 V

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+ 0.426 V

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+ 1.10 V

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Solution

The correct option is D $+ 1.10 V$
$E^{0}$ of Zn = -0.763
$E^{0}$ of Cu = 0.337
$E_{c e l l}^{0}$ = $0.337 - (- 0.763) V = 1.1 V$

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Similar questions

25^{\circ} C

C u_{(a q)}^{2 +} + 2 e^{-} \to C u_{(s)} E^{\circ} = 0.337 V

Z n_{(a q)}^{2 +} + 2 e^{-} \to Z n_{(s)} E^{\circ} = - 0.763 V

Z n_{(a q)}^{2 +} + 2 e \to Z n_{(s)} E^{\circ} = - 0.762 V

C r_{(a q)}^{3 +} + 3 e \to C r_{(s)} E^{\circ} = 0.740 V

2 H_{(a q)}^{+} + 2 e \to H_{2 (g)} E^{\circ} = 0.0 V

F_{2 (g)} + 2 e \to 2 F_{(a q)}^{-} E^{\circ} = 2.87 V

E^{\circ}

Z n (s) | Z n^{2 +} 1 M (a q .) ∥ C u^{2 +} 1 M (a q .) | C u (s)

1.10 V

25^{\circ} C

Z n (s) + C u^{2 +} (a q .) ⇌ Z n^{2 +} (a q .) + C u (s)

Z n_{(a q)}^{2 +} + 2 e^{-} ⇌ Z n_{(s)}

E^{\circ}

- 0.762 V

C r_{(a q)}^{3 +} + 3 e^{-} ⇌ C r_{(s)}

E^{\circ}

- 0.740 V

2 H_{(a q)}^{+} + 2 e^{-} ⇌ H_{2 (g)}

E^{\circ}

0.000 V

F e_{(a q)}^{3 +} + e^{-} ⇌ F e_{(s)}^{2 +}

E^{\circ}

0.770 V

(E^{\circ})

+ 1.1 V

Δ G^{\circ}

Z n (s) + C u_{(a q)}^{2 +} \to Z n_{(a q)}^{2 +} + C u (s)

(1 F = 96500 C / m o l)

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