Redox Experiment
-- Grading
Rubric
The lab report expectations
are listed below. Please copy the
small grading rubric onto the title page of your report. A blank data sheet is also attached if
it is helpful for organizing your data in the report.
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Lab Notebook |
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/16 |
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Objective
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/4 |
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Data/
Log/ Observations – include good observations from each of the
experiments |
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/8 |
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Signature and Stamp |
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/4 |
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Formal Report |
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/44 |
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Title
page – include instructor name and section number |
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/2 |
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Procedure
– Reference the procedure and note any changes you made. |
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/3 |
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Data and Equations (May be in log) Data table similar to the one provided in the
experiment handout. Be sure to
include balanced equations for each reaction that occurred. For each experiment note which of the
two elements is more active. HINT: All of the balanced
equations should be redox equations. Do not include the reactions of
copper with ammonia or the reactions to detect halides with silver nitrate in
your report. Note that the Fe+3
will be reduced to Fe+2 if a reaction occurs. Also remember that the hexane is used
only to detect the presence of either I2 or Br2. |
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/16 |
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Discussion
- Describe any difficulties you had in determining the activity series and
any points where you are unsure of the relative activities of the
elements. Describe any
additional experiments that might help you to make a better assessment of the
relative activities. |
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/15 |
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Conclusion – Give the final activity
rankings for the elements you tested.
(Be sure to include all of the ions/metals you tested -- Br,Cu,Fe,Fe+3,H,I,Cu
and Zn) |
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/8 |
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Worksheet – Complete the redox drills from the handout. |
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/40 |
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Total |
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/100 |
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REDOX
Experiment – Grading Rubric
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Lab Notebook |
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/16 |
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Objective |
/4 |
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Data |
/8 |
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Signature and Stamp |
/4 |
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Formal Report |
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/44 |
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Title Page |
/2 |
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Procedure |
/3 |
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Data and Equations |
/16 |
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Discussion |
/15 |
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Conclusion |
/8 |
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Questions |
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/40 |
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Total |
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/100 |
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Reactants
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Observation |
Reaction |
element oxidized |
element reduced |
stronger oxidizing agent |
More active element |
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Cu |
Zn+2 |
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Cu |
Fe+2 |
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Zn |
Cu+2 |
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Zn |
Fe+2 |
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Fe |
Cu+2 |
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Fe |
Zn+2 |
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Cu |
H+ |
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Zn |
H+ |
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Fe |
H+ |
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I2 |
Br- |
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Br2 |
I- |
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Fe+3 |
Br- |
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Fe+3 |
I- |
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Cu |
I2 |
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Cu |
Br2 |
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