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$Fig20_05CdCu.gif$

A electrolytic cell similar to that shown in the figure above is constructed. The electronic device shown at the top of the figure is a power supply. One electrode compartment consists of a copper strip placed in a 1.0 M CuSO₄ solution, and the other has a cadmium strip placed in a 1.0 M Cd(NO₃)₂ solution. The overall cell reaction is:

Cd²⁺(aq) + Cu(s) Cd(s) + Cu²⁺(aq)

(a) Fill in the information necessary to complete the half reactions that occur in the two electrode compartments. Use the lowest-possible whole-number coefficients. To input an ion surround the ion's element symbol with square brackets and put the ion's charge to the right like this: Al³⁺ = [Al]3+ (not [Al]+3), and Li⁺ = [Li]+ (not [Li]1+ or [Li]+1). Do not use brackets for neutral species.


Anode half reaction:  (s)   (aq) +  e^-

Cathode half reaction:  (aq) +  e^-  (s)





(b) Figure out which electrode is the anode, which is the cathode, the signs on these electrodes, the direction in which the electrons flow through the power supply, and the direction in which cations and anions migrate through the salt bridge and solutions. Use this work to pick all of the statements from below which are true.

Anions migrate from the 1.0 M Cd(NO₃)₂ solution through the salt bridge to the 1.0 M CuSO₄ solution.The copper electrode is the anode and the cadmium electrode is the cathode.Electrons flow from the cadmium electrode to the copper electrode through the power supply.Cations migrate from the 1.0 M Cd(NO₃)₂ solution through the salt bridge to the 1.0 M CuSO₄ solution.The cadmium electrode is positive and the copper electrode is negative.Cations migrate from the 1.0 M CuSO₄ solution through the salt bridge to the 1.0 M Cd(NO₃)₂ solution.Electrons flow from the copper electrode to the cadmium electrode through the power supply.The copper electrode is positive and the cadmium electrode is negative.The cadmium electrode is the anode and the copper electrode is the cathode.Anions migrate from the 1.0 M CuSO₄ solution through the salt bridge to the 1.0 M Cd(NO₃)₂ solution.

Answer 1

true options- [1]Electrons flow from the cadmium electrode to the copper electrode through the power supply.

[2]The cadmium electrode is the anode and the copper electrode is the cathode.

[3]Anions migrate from the 1.0 M CuSO₄ solution through the salt bridge to the 1.0 M Cd(NO₃)₂ solution.

thank you