Visualizing ConceptsAssume that you want to construct a voltaic cell that uses the followi...

Visualizing Concepts

Assume that you want to construct a voltaic cell that uses the following half-reactions:

A2+(aq) + 2 e-→A(s) → E°red = -0.10 V

B2+(aq) + 2 e-→B(s) → E°red = -1.10 V

You begin with the incomplete cell pictured here in which the electrodes are immersed in water.

(a) What additions must you make to the cell for it to generate a standard emf?

(b) Which electrode functions as the cathode?

(c) Which direction do electrons move through the external circuit?

(d) What voltage will the cell generate under standard conditions? [Sections]