Winter 2014 Q3

[heather_carlton_1K]

For question 3 on the Winter 2014 final exam how would you know which chemicals to pick for the galvanic cell without the voltage given?

[Chem_Mod]

The voltage isn't given because in an earlier part of the question, you're asked to identify the chemicals required to build a galvanic cell with the HIGHEST possible voltage.

[Jeannie_Kim_1I]

The voltage values would probably be given either on that page of the exam or on a separate sheet of reduction reactions and their respective voltage values.

[David Sung 2H]

Why is Cu(NO3)2 not considered for making a galvanic cell? Does it not also have good conducting qualities since nitrates are soluble in water?

[Absolute Zero 1O]

I assume reduction potentials must have been given. If you compare each of the E° for each of the half reactions and try to build a cell with highest E°, that would lead you to make those choices of chemicals given in the answer key.