Homework Help: chemistry

Posted by valenti on Wednesday, April 23, 2008 at 10:22am.

Could I get some help with these please?

Thanks
Calculate the electrical potential (V).
Ag/1M Ag+1// 1M Fe+3/Fe
Ag2+( aq ) + e – Ag+( aq ) 1.98
Fe3+( aq ) + 3e – Fe(s) –0.04
2. A voltaic cell is reconstructed used electrodes based on the following half reactions:
Pb2+ ( aq ) + 2e – Pb (s) -0.13V
Mn2+ ( aq ) + 2e – Mn (s) -1.19V
a. What is the anode and what is the cathode in this cell?
b. What is the standard cell potential?
Pb2+ ( aq ) + 2e – Pb (s) -0.13V
Mn2+ ( aq ) + 2e – Mn (s) -1.19V
Pb2+ ( aq ) + 2e – Pb (s) -0.13V
Mn (s) Mn2+ ( aq ) + 2e – +1.19V

chemistry - DrBob222, Wednesday, April 23, 2008 at 1:01pm
This doesn't look like help. It looks like we're doing your homework. Tell us what you don't understand about the first one and we can help you through it.

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