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The effect of different Electrodes and Electrolytes on voltage Featured science projectScience project video

Observation

The results obtained in this experiment are recorded in the table below.

Type of electrochemical cell Voltage (mV)
Zinc-copper 100
Lead-copper 501
Lead-zinc 489

*The above readings are the average obtained after 5 trials.

For the zinc-copper cell, 100 millivolts of electricity is produced.
For the lead-copper cell, 501 millivolts of electricity is produced.
For the lead-zinc cell, 489 millivolts of electricity is produced.

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Complexity level:
5
Project cost ($):
10
Time required:
1 hour to prepare, 10 minutes for observation.
Material availability:
All materials mentioned should be available from your school chemistry laboratory.
Safety concerns:

Students should be careful as they are dealing with electricity and chemical reactions in this experiment. Adult supervision required at all times.