A voltaic cell similar to that shown in the figure above is constructed. The ele

Question

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

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

Explanation / Answer

a)

anode reaction oxidation:   Cd (s) ----------------------> Cd+2 (aq) + 2e-

cathode reaction reduction : Cu+2 (aq) + 2e- --------------------> Cu (s)

b)

anode is Cd electrode

cathode is Cu electrode

electrons will flow from left to right that means Cd to Cu

ions will flow from right to left . from Cu to Cd

true statements

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

Cations migrate from the 1.0 M Cd(NO3)2 solution through the salt bridge to the 1.0 M CuSO4 solution.

Electrons flow from the cadmium electrode to the copper electrode through the volt meter.

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

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