Calculate the e-m-f of the following cell reaction at 298K- Mg s - Cu 2- 0-0001M- Mg 2- 0-001M- Cu sThe standard potential Eo of teh cell is 2-71V-

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Equivalent, Molar Conductivity and Cell Constant

Calculate the...

Question

Calculate the e.m.f of the following cell reaction at $298 K$ :
${M g}_{(s)} + {C u}^{2 +} (0.0001 M) \to {M g}^{2 +} (0.001 M) + {C u}_{(s)}$
The standard potential $(E^{o})$ of teh cell is $2.71 V$ .

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M g_{(s)} + C u^{2 +} (0.0001 M) \to M g^{2 +} (0.001 M) + C u_{(s)}

E_{M g^{2 +} / M g}^{o} = - 2.37

E_{C u^{2 +} / C u}^{o} = + 0.34

1

{C u}^{2 +}

C u

298 K

M g (s) | {M g}^{2 +} (0.1 M) | | {C u}^{2 +} (0.01 M) | C u (s)

E_{c e l l}^{0} = + 2.71 V, 1 F = 96500 C {m o l}^{- 1}

M g (s) + c u^{2 +} (a q) ⇌ C u (s) + M g^{2 +} (a q)

M g

C u

- 2.37

+ 0.34 V

M g_{(s)} + 2 A g_{(a q)}^{+} \to M g_{(a q)}^{2 +} + 2 A g_{(s)}

E_{M g^{2 +} / M g}^{0} = - 2.37 V

E_{A g^{+} / A g}^{0} = 0.80 V

[M g^{2 +}] = 0.001 M; [A g^{+}] = 0.0001 M

Z n | Z n^{2 +} (0.001 M) | | C u^{2 +} (0.1 M) | C u

C u / C u^{2 +}

Z n / Z n^{2 +}

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