Exercise 10 Report Form: Electrochemistry – Galvanic Electrochemical Cells
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.
