Looking at Table 5 (results file), how is Kc related to the initial concentrations ( [Fe3+]o and [SCN–]o)? Is it what you expected? (Explain briefly)
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Description
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Lab report
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Name:
ID #:
TA name:
Lab Section:
Lab Date:
1.
Looking at Table 5 (results file), how is Kc
related to the initial concentrations ( [Fe3+]o
and [SCN–]o)?
Is it what you expected? (Explain briefly) (2 marks)
2.
To obtain [FeSCN2+]eq in tube 5, you made the
assumption that 100% of the ions SCN–
had
reacted.
Now that you know the value for Kc (average in table 5), build an
ICE diagram to calculate the true percentage of SCN– reacted in tube 5. Comment on the validity of the assumption. (Make
sure you include the ICE diagram in your answer) (3 marks)
3. Use
data in table 6 (result file) to plot the graph of ln(Kc) versus 1/T.
From the graph, determine the enthalpy (DH) of
the reaction, show your work below. Copy
and paste the graph below and include with this lab report. (2 marks for the
graph, 1 for Enthalpy )
Please
note, for this report you may write out the answers to question 1 and 2 by
hand, scan the file and submit as a pdf. You can use the uprint printers to
scan and e-mail the file.
©McGill
University 2020
Once you are complete, remember to save
as .pdf file and submit to MyCourses.
Double check your submission to make
sure that you have submitted the correct file.
(Sometimes students accidentally submit
the empty template, a corrupt file or the wrong file altogether, double check
the file that you have submitted to make sure this doesn’t happen to you.)
This assignment is to be done
individually. Everyone
will be evaluated on the basis of their own work. We compare digitally all
submissions; plagiarism will likely be detected.
This assignment is protected by law and may not be copied or
distributed in any form or in any medium without explicit permission of the
instructor Mitchell Huot. Note that infringements of copyright can be subject
to follow up by the University under the Code of Student Conduct and
Disciplinary Procedures.
