Factors affecting Galvanic Cells

• Type of solution used: Cu(NO3)2, Zn(NO3)2, Pb(NO3)2
• The concentration of the each solution.

• Dependant:

• The mass change in the cathode and anode

• Controlled

• The amount of time
• The metals used for both rods
• The temperature of the solutions

Materials:

• Power supply
• Voltmeter
• Zinc and Copper metal rods
• Circuit wire
• Beakers
• Salt Bridge
• Sand Paper
• Crocodile clips
• Graduating Cylinder
• Cu(NO3)2, Zn(NO3)2, Pb(NO3)2
• Weight Scale

Procedure:        

• Set up a beaker with 300 mL of 1M Cu(NO3)2
• Set up the voltmeter so it’s connected to the power supply, correctly and with crocodile clips

• Set up the beakers and the salt bridge as shown in the diagram

• Obtain small strips of filter paper, to be used as salt bridges. Wet each strip with Cu(NO3)2 and insert into the solution. Repeat for each of the three remaining salt solutions.

• Start the power supply for 5 minutes and record the amount of voltage created. Do so three times and record the information

• Repeat above steps for 0.5M, 1.5 M and 2M and then repeat so with the remaining solutions.