Unit B2 Lab: Building a Voltaic Cell PDF

Z cbmadgjl Schroderus Student Name: Unit B2 Lab: Building a Voltaic Cell This assignment relates Unit B General Outcome 2: apply the principles of oxidation- reduct...

Z cbmadgjl Schroderus Student Name: Unit B2 Lab: Building a Voltaic Cell This assignment relates Unit B General Outcome 2: apply the principles of oxidation- reduction to electrochemical cells. Chemical Formula and Equations Include states of matter in all questions Balance the chemical equation when needed Completing Your Assessment It is strongly recommended that you complete the assessment by hand. o Print the assessment template and write your answers You can complete the assignment digitally using a stylus and tablet You can also complete the assignment digitally (not recommended). You will need to use the equation editor, which can be very time consuming when showing all your work. Submitting Your Assessment Submit all the pages of your assignment as one.pdf file. Pages/Questions must be in order, upright and easily readable. o Option 1: Download a free scanning app such as Adobe Scan or CamScanner. Open the app on your smartphone and take photos of your work. Follow the instructions in the app to create a PDF file. Save the PDF file on your phone and open a browser to upload it to D2L or email the PDF to yourself then open it on a desktop and submit to D2L. o Option 2: Use a scanner to scan your work o Option 3: Complete the assessment using a tablet and stylus Upload your file to "Unit B2 Lab" assignment folder which is found by clicking Assignments on the nav bar. Z cbmadgjl Schroderus Observations (Not graded, but needed to complete the assessment) Cell 1 Zn(s) │Zn2+(aq) ║ Cu2+(aq) │Cu(s) Cell 2 Zn(s) │Zn2+(aq) ║ Fe2+(aq) │Fe(s) Anode Anode Cathode Cathode Reduction Half Rxn Reduction Half Rxn Oxidation Half Rxn Oxidation Half Rxn Net Cell Rxn Net Cell Rxn Predicted Standard Predicted Standard Cell Potential Cell Potential Observed Cell Observed Cell Potential Potential Cell 3 Fe(s) │Fe2+(aq) ║ Cu2+(aq) │Cu(s) Cell 4 Mg(s) │Mg2+(aq) ║ Zn2+(aq) │Zn(s) Anode Anode Cathode Cathode Reduction Half Rxn Reduction Half Rxn Oxidation Half Rxn Oxidation Half Rxn Net Cell Rxn Net Cell Rxn Predicted Standard Predicted Standard Cell Potential Cell Potential Observed Cell Observed Cell Potential Potential Cell 6 Mg(s) │Mg2+(aq) ║ Cu2+(aq) │Cu(s) Cell 5 Mg(s) │Mg2+(aq) ║ Fe2+(aq) │Fe(s) Anode Anode Cathode Cathode Reduction Half Rxn Reduction Half Rxn Oxidation Half Rxn Oxidation Half Rxn Net Cell Rxn Net Cell Rxn Predicted Standard Predicted Standard Cell Potential Cell Potential Observed Cell Observed Cell Potential Potential Z cbmadgjl Schroderus 1. Choose two cells from the virtual lab and hand draw a diagram of each cell. Your cell should include two beakers, a salt bridge, wire, voltmeter, anode and cathode. Images cut and paste from the internet will not be graded. Label the Anode and Cathode Include the direction of electron movement Include direction of cations and anions Cell ____: Cell ____: Z cbmadgjl Schroderus 2. Compare the predicted standard cell potentials with the observed values. Was there a discrepancy? Provide possible reasons for any differences. 3. Suggest a reason why very small voltaic cells were constructed for this investigation. 4. Would you expect a difference in the cell potential had larger cells been constructed and tested? Suggest an aspect of a cell’s function that may be affected by using a larger cell that contains a greater quantity of chemicals. 5. A Ni-Cd rechargeable cell has a cell potential of +1.30V. If the cathode has a potential of +0.49 V, what is the anode’s potential?