Sample Test Questions:

 

1) What is the substance being reduced in the following:

      Cr₂O₇^2- +6S₂O₃^2- +14H ⁺ à 2Cr ³⁺ +3S₄O₆ ^2- + 7H₂O

 

2) What is the sign of the cathode in a galvanic cell?   

 

3) Balance the following redox reaction in acidic solution:    HClO₂  + MnO₂ àCl₂ + MnO₄^-

 

4)  For a cell be able to:

 

a)            draw the cell.

b)            Label the anode and cathode.

c)             indicate the direction of electron flow

d)            indicate movement of anions and cations

e)            find the E°   for the cell.