# Chemistry 104

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The voltage generated by the zinc concentration cell described by,

Zn(s)|Zn2 (aq, 0.100 M)||Zn2 (aq, ? M)|Zn(s)

is 11.0 mV at 25 °C. Calculate the concentration of the Zn2 (aq) ion at the cathode.

• Chemistry 104 -

Ecell = Eocell - (0.0592/2)log(x)/(Zn^2+)
0.011 = 0 -(0.0592/2)log(0.1/x)
Solve for x.

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