I need help to do my chemistry lab report
Cycle of Copper Reactions
Name
Lab partner(s)
Date
GSA’s name
Section
PROCEDURE (States changes made to the procedure. If no changes were done, say the procedure was followed as written.)
RESULTS (Fill in the data table. Write sample calculations and give a brief analysis of results.)
Table 1: Data Table on Mass Values
|
Measured Mass |
Units (g) |
|
Erlenmeyer flask |
|
|
Copper granules |
|
|
Erlenmeyer flask and dry copper |
|
|
Mass of recovered copper |
|
|
Percent of recovered copper |
|
Table 2: Observations from reactions in the copper cycle
|
Reaction |
Observations |
|
Cu + HNO3
|
|
|
Cu(NO3)2 + NaOH
|
|
|
Cu(OH)2 +heat
|
|
|
CuO + H2SO4
|
|
|
CuSO4 + Zn
|
|
Sample calculations: (Write the equation used to find the percent of recovered copper and define the variables. Show the calculations.)
Analysis of results: (Write a short paragraph where you describe why the amount of recovered copper either changed or stayed consistent from beginning to end. Remember to also include here the questions answered from the procedure in a separate paragraph.)
DISCUSSION (Answer the following questions correctly and thoroughly using complete sentences.)
1. Identify the types of reactions observed and describe them in same order as they are done in the experiment for cycle of copper.
2. What would be the effect of using a single, solid chunk of copper metal instead of the copper granules? What would be the effect of using powdered copper metal? Describe the factor or factors taken in consideration to answer this question.
3. In step 4, you were warned not to let the solution bubble due to bumping or boiling. If the solution did splash out of the flask due to bubbling, would this affect your final product? Explain.
4. New U.S. pennies have a copper color. Why wouldn’t this cycle of copper procedure work with a penny instead of copper wire? Compare the characteristics each has. (Cite your source)
REFLECTION (Explain personal contributions to the experiment as well as your partner’s contributions. Identify at least one limitation encountered and give at least one suggestion for improvement.)