Editing Question For Electrolysis - Producing Copper Lab

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As part of the Calculation section of Lab write-up, do the following: 
1. Draw a picture of the lab apparatus and include: 
a. The cathode is the electrode (terminal) at which reduction occurs. Write the correct half cell reaction (at bottom of side of U tube that you say it occur) including number of electron moving 
b. The other electrode, the anode, is where oxidiation occurs. Write the correct half cell reaction (at bottom of side of U tube that you say it occur) including number of electron moving 
c. Indicated on the drawing the type of material you used for each electrode (you symbol of the electrode can look a "t" with a long body and no hook at bottom. 
d. Alligator clips and wire (called Leads) can be shown as lines and battery can be a box with the word "Battery" or capital letter P (also could put the actual symbol for battery). 
 
2. Underneath the picture, write the complete/molecular chemical reaction. Then show all work in determining what is oxidized, what is reduced, what is oxidizing agent, what is reducing agent and balance the Redox by Oxidation Number. 
 
3. 2019-2020 Student don't do this partLeave some blank space and then write each half cell and put the voltage for each half cell (you determine from Standard Reduction Potential Table given to you) to the far right side of the line you wrote the half cell reaction on. Stack two lines of information as if you were adding them (which you are going to do!). Then put an addition line below it and then add the two half cell together to the overall balanced chemical reaction. Add the voltages of the two half cells to get the Ecell for the overall reaction (also called cell).
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<center>Questions for Electrolysis - Producing Copper Lab</center> 
1. From the balanced complete/molecular chemical reaction in Q4a (or given to you in the lab explanation), show all work in determining what is oxidized, what is reduced, what is oxidizing agent, what is reducing agent and balance the Redox by Oxidation Number. 
 
2. Using observation(s) from your data table, describe the changes observed at each electrode to confirm what Q1 proposed/hypothesized. 
 
3a. 2019-2020 students do not doFrom your balanced equation for the overall chemical change in this electrolysis reaction and given above the Ecell (cell voltage) including the sign, what does the sign of the Ecell mean (Hint: In terms of energy)? 
 
3b. What does the energy from Q3a "do" or allow to occur in the reaction in Q1. Using Thermodynamic speak, the reaction is said to be what? 
 
4. What are the possible reasons (limiting factors) why this reaction would "stop". What is not one of the possible reasons (2019-2020 students do not do Hint: What does the sign of the Ecell mean.) 
5. Why did the lab use "pen lead" (actually is graphite which is one of the 3 types of substance where carbon is bonded only to other carbon) as the electrode instead of copper metal.

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