Exercise 10 Report Form: Electrochemistry – Galvanic Electrochemical Cells
Name: _________________________________ Date: ____________________
Lab Partner: _____________________________ Instructor: ________________
Electrochemical cells:
Reaction
Zn + Cu2+ (0.10 M) ® Zn2+ (0.10 M) + Cu
Zn + Fe2+ (0.20 M) ® Zn2+ (0.10 M) + Fe
Fe + Cu2+ (0.10 M) ® Fe2+ (0.20 M) + Cu
Zn + Br2 (sat’d) ® Zn2+ (0.10 M) + 2 Br- (0.5 M)
Cu + Cu2+ (0.10 M) ® Cu2+ (1.0×10-5 M) + Cu
(2 points) Measured potential (V)
(2 points) Calculated potential (V)
(2 points) Which substance is oxidized?
(2 points) Which substance acts as the cathode?
(1 point) The e- flow from which electrode?
(1 point) The e- flow to which electrode?
(1 point) In a spontaneous electrochemical cell, at which electrode does reduction occur?
(1 point) In a spontaneous electrochemical cell, at which electrode does oxidation occur?
(1 point) In a spontaneous electrochemical cell, electrons flow from which electrode to which electrode?
(2 points) For full credit, show your calculation of the ‘Calculated Potential’ for the Cu/Cu concentration cell.
