Consider a galvanic cell constructed as Zn|Zn^{2+} (0.010 M) || Cu^{2+} (0.10 M) |Cu at 25 °C. Standard electrode potentials are E°(Cu^{2+}/Cu)=+0.34 V and E°(Zn^{2+}/Zn)=-0.76 V.

(a) Calculate the cell EMF under the given conditions.

(b) If the cell delivers a constant current of 0.50 A for 2.00 h, determine the mass of copper deposited on the copper electrode.

Question

Consider a galvanic cell constructed as Zn|Zn^{2+} (0.010 M) || Cu^{2+} (0.10 M) |Cu at 25 °C. Standard electrode potentials are E°(Cu^{2+}/Cu)=+0.34 V and E°(Zn^{2+}/Zn)=-0.76 V.

(a) Calculate the cell EMF under the given conditions.

(b) If the cell delivers a constant current of 0.50 A for 2.00 h, determine the mass of copper deposited on the copper electrode.

Accepted Answer

EMF = 1.13 V; mass of Cu deposited = 1.19 g

Gce Model Questions Vol1 2023 Chemistry Question 46

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