Electrochemical Cells

Year 11 Chemistry
Electrochemical Cells

Purpose
To narrow down the order of reactivity for the metals copper, iron, lead and zinc utilize the to the lowest degree amount of electrochemical stalls as possible.

Materials List
Four 100ml beakers
4 strips of filter paper rough 15cm in length
Voltmeter
Sodium Chloride tooth root at 10% concentration
Zinc, squealer, exceed and Iron metal strips (approximately 10 cm)
50 ml of Copper sulphate, Zinc sulphate, Lead process and Iron nitrate themes
Scissors

Procedure
- bum the 50ml reply of zinc sulphate in a 100ml beaker, and 50ml solution of copper sulphate in a different 100ml beaker. prescribe the zinc metal strip in the zinc sulphate beaker and the copper metal strip with the copper sulphate beaker.
- interpenetrate one of the filter paper strips in the sodium chloride solution, make sure 100% of the surface has been covered. Place one stop over of the filter paper in the zinc sulphate solution and the other end in the copper sulphate solution (making sure the filter paper is not touching the metals)
- using the voltmeter, touch both metals with the connecting wires so there is positive reading. criminal record the voltage, anodic metal and cathodic metal.
- Repeat this process using an Iron metal strip in 50ml of Iron nitrate solution and a lead metal strip in 50ml of lead nitrate solution.
- Combine the most reactive (anodic) metals from the firstly two cells, to create the next cell. This combination will determine the overall 1st and 2nd most reactive.



The next cell set up will be the two least reactive (cathodic) metals from the first two cells, this will determine the tertiary most reactive and the least reactive overall.

Results
| |Voltage |Anode |Cathode | half(a) Equations |
|Copper-Zinc |1.08V |Zinc |Copper |Zn ? Zn2+ + 2e- Cu2+ + 2e- ?Cu...If you want to get a full essay, order it on our website: Orderessay



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