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 cobalt strip placed in a 1.0 M CoCl3 solution, and the other has a lead strip placed in a 1.0 M Pb(NO3)2 solution. The overall cell reaction is:

Anions migrate from the 1.0 M CoCl3 solution through the salt bridge to the 1.0 M Pb(NO3)2 solution.The cobalt electrode is positive and the lead electrode is negative.Electrons flow from the lead electrode to the cobalt electrode through the volt meter.The cobalt electrode is the anode and the lead electrode is the cathode.Anions migrate from the 1.0 M Pb(NO3)2 solution through the salt bridge to the 1.0 M CoCl3 solution.The lead electrode is positive and the cobalt electrode is negative.Electrons flow from the cobalt electrode to the lead electrode through the volt meter.Cations migrate from the 1.0 M CoCl3 solution through the salt bridge to the 1.0 M Pb(NO3)2 solution.The lead electrode is the anode and the cobalt electrode is the cathode.Cations migrate from the 1.0 M Pb(NO3)2 solution through the salt bridge to the 1.0 M CoCl3 solution.

Explanation / Answer

anode reaction :

3Pb(s) ---------------------> 3Pb+2   (aq)   + 6e-

cathode reaction :

2 Co+3 (aq) + 6 e- ---------------------> Co (s)

Anions migrate from the 1.0 M CoCl3 solution through the salt bridge to the 1.0 M Pb(NO3)2 solution.(TRUE)

The cobalt electrode is positive and the lead electrode is negative (TRUE)

.Electrons flow from the lead electrode to the cobalt electrode through the volt meter (TRUE)

.The cobalt electrode is the anode and the lead electrode is the cathode (False)

.Anions migrate from the 1.0 M Pb(NO3)2 solution through the salt bridge to the 1.0 M CoCl3 solution.(False)

The lead electrode is positive and the cobalt electrode is negative.(False)

Electrons flow from the cobalt electrode to the lead electrode through the volt meter (False)

.Cations migrate from the 1.0 M CoCl3 solution through the salt bridge to the 1.0 M Pb(NO3)2 solution. (False)

The lead electrode is the anode and the cobalt electrode is the cathode.TRUE

Cations migrate from the 1.0 M Pb(NO3)2 solution through the salt bridge to the 1.0 M CoCl3 solution. (TRUE)

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