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Constructing A Galvanic Cell Experiment

1308 Words6 Pages

AIM
Understand reactivity series of metals. Measure voltage generated in electrochemical cells dependence of metal type and concentration of liquids.

INTRODUCTION

Electrochemistry is a movement of electrons from one element to another in redox reaction. In order to produce electricity Galvanic cell is needed. Galvanic cell consists of two metal electrodes which are connected by wire and a salt bridge connecting the ionic solutions. Salt bridge maintains electric neutrality.
There are several factors that affect the cell’s emf like temperature, concentration, area of electrode immersed in solution, position of the chemicals in electrochemical series, cleanliness of the metal surface.

RISK ASSESSMENT

Chemical Hazard …show more content…

Measuring of the cell potentials of Galvanic cells.

Experiment 3: Constructing a zinc/iron cell
Electrode Electrode Electrolyte (25cm3) E0cell
Cathode Fe FeSO4 0.409
Anode Zn ZnSO4 Figure3. Measuring of the cell potentials of Galvanic cells.

Experiment 4: Constructing an iron/copper cell
Electrode Electrode Electrolyte (25cm3) E0cell
Cathode Cu CuSO4 0.623
Anode Fe FeSO4 Figure4. Measuring of the cell potentials of Galvanic cells.

Experiment 5: Effect of concentration on

Concentration of CuSO4 (0.001M)
Electrode Electrode Electrolyte (25cm3) E0cell
Cathode Cu CuSO4 0.961
Anode Zn ZnSO4 Figure5. Effect of concentration on e.m.f. Concentration of CuSO4 (0.01M)
Electrode Electrode Electrolyte (25cm3) E0cell
Cathode Cu CuSO4 0.973
Anode Zn ZnSO4 Figure6. Effect of concentration on e.m.f.

Concentration of CuSO4 (0.1M)
Electrode Electrode Electrolyte (25cm3) E0cell
Cathode Cu CuSO4 0.994
Anode Zn ZnSO4 Figure7. Effect of concentration on e.m.f.

Concentration of CuSO4

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