1. Sketch a construction of a voltaic cell based on the reaction: Zn(s) + Ni +2 (aq) => Zn +2 (aq) + Ni(s)Label the anode and cathode.Identify the positive and negative electrodes.Indicate the direction of flow of the electrons and ions.
2. 20.33
3. Half cell potentials are:
Sn +4+2e - = Sn +2 Eo= 0.154 v
Fe +3+ 1e - = Fe +2 E o= 0.771 v
For the reaction: Fe +3+ Sn +2 = Fe +2 + Sn +4
a) Balance the reaction.
b) Calculate the standard potential
c) Calculate the potential of the cell when the [Fe +2 ]=.01 M; [Fe +3]=.001 M; [Sn +2 ] = 1 M; and [Sn +4] = .1 M.1
4. 20.57