Formal Lab reports should be typed double-spaced with 12 pt. font and 1 inch margins. The report should include the following format:
Abstract – brief summary of the entire experiment
– Give an overview of what you will be doing in the lab and the goal of the experiment
- Introduction & Background Section – state the objective of the experiment and discuss any relevant theory pertaining to the particular lab being
-What should be included:
– Background on lability/stability of inorganic complexes.
– Differences between Co(II) and Co(III) in terms of d-atomic orbital electron distribution
- – Give the structures of the three compounds you will be synthesizing
– Give all the reactions you performed in the three weeks
-What information do we learn about a complex from U.V-Vis absorption and FT-IR? How are they different?
-What are the effects of adding different ligands to Co? Talk about the spectrochemical series and their influence on d-orbital splitting
– Explain the common ion effect and how it pertains to this lab
Experimental – an explanation of all procedures performed and materials needed to replicate the Must be in paragraph format; no lists.
-Include the synthesis from Part A, B, and C. Please be in your own words
-Don’t include the methods for obtaining the absorption spectrum, FT-IR, or conductivity.
-Do not include personal pronouns (he, she, they, we, etc. )
Observations & Results – clear state all observations taken during the experiment and tabulate results completely showing all calculations for percent yield and related calculations (use proper significant figures and units in calculations).
-Include four figures and 1 table – (create your own tables – do not share tables)
- 1.) Absorption spectrum of [Co(NH3)4CO3] NO3
2.) Absorption spectrum of [Co(NH3)5Cl] Cl2
3.) Absorption spectrum of Co(NH3)5(H2O)
4.) FT-IR spectrum of Co(NH3)4CO3 and Co(NH3)5Cl – Properly labeled will vibrational modes
5.) Table with the conductivity values of the three complexes
Discussion – Paragraph form/Numbered – Do not copy the post lab questions into the report. Just answer the questions.
- – Post Lab Questions
– Including Yield Calculations for Part A and B
Couple comments about the following post lab questions
-Part C Q1: Omit this question – It’s in the results section
-Part C Q2: Resistivity is 1/Conductivity
– Don’t calculate cell constant, specific conductivity, and molar conductivity
– Part C Q3: Omit this question
– Part C Q4: Answer this question
– Part C Q5: Answer this question
- – Part C Q6: You can answer this – Assume the concentration is 1 mM
– Part C Q7: Answer this question but describe the differences in the absorption maxima. What is accounting for those differences?
– Part C Q8: Answer this question
– Part C Q9: Answer this question
– Part D Q1: Put a table with the assigned vibrational mode and the associated wavenumber
– Part D Q2: Answer this question – try your best
– Part D Q3: Omit this question because you should’ve assigned your spectrum in the results section.
– Part D Q4: Good question. Do you think there are any NO3 vibrational modes? If so, where should they be? And what would happen if the NO3 was coordinated to the Co?
– Part D Q5: This is a good question. How do you know you coordinated the CO3? How would the spectrum look with only CO3?
– Part D Q6: Create a table for the Co(NH3)5Cl complex
– Part D Q7: What bands do you think are absent?
– Part D Q8: Answer this question
– Part D Q9: Answer this question
Include the percent yields after the post lab questions so:
– Part A Q6
– Part B Q5
Conclusions – summarize the purpose of the experiment and state with reasoning the experiment was successful or not and how it could potentially be
– What issues did you have? How could you fix them? What would you like to do next in terms of inorganic synthesis?
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