organic chemistry post lab IR annotation and short form, Chemistry homework help

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PynverZnevr2294

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I need somebody to help me annotate my IR spectrum I collected today in lab and then fill out a couple questions based on the IR data. I have included all of my notebook pages for background on the experiment and what I observed in the lab.

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Name: ________________________________________________________ Organic Chemistry II Lab (CHEM 310) Aldol Post-Lab Instructions & Report Form Your experimental procedure is a separate assignment that should be submitted via Blackboard. Table for reporting infrared spectroscopy data (2 points; include the two most important signals and up to two other signals. The most important signals are the ones that tell you something about the structure of your product with high certainty). Frequency of observed absorptions at peak maxima (cm-1) Observed intensities (S, M, W) and peak shapes (only include for broad signals) Functional Group Type of Vibration Type # of Vibration from the IR Spectroscopy Correlation Table Turn in your annotated IR spectrum with this assignment. Questions: 1. (2 points) calculate the atom economy for this aldol condensation reaction. Show your work for credit and circle your final answer. 2. (1 point) calculate the reaction efficiency for this aldol condensation reaction. You can use the result from your previous calculation rather than re-doing that calculation here. Show your work for credit and circle your final answer. Page 1 of 1 Your lab instructor will use this area to tabulate your score (do not fill out this table yourself) Item Student Score Points Possible Lab safety, preparedness, and cleanliness 5 Post-lab analysis 6 Notebook content 14 Total 25 Page 2 of 1 95.2 90 85 2285.34 2049.24 3013.66 2954.19 2932.83 2835.56 80 1374.22 1876.69 75 1296.99 930.28 1480.21 70 1324.70 1183.11 920.17 775.67 761.66 %T 1439.44 1115.27 940.46 1032.01 1202.70 913.27 678.55 1464.70 1576.09 65 807.51 1102.60 1088.00 1276.71 60 1620.49 1689.30 1421.35 979.92 1592.98 849.89 789.71 1163.12 1254.79 55 1512.76 50 1236.72 1021.51 1144.57 739,20 45 43.6 650.0 1000 2000 1500 3000 4000.0 cm-1 flask Color. It was a 1) Combine 0.209 of 1- indanone in a small 1) 0.2039 1-indanone Erlenmeyer flask with 0.25g weighed out Of 3,4-dimethybxy benzaldenude. 0.25 g 3.4-dimethoxy benzaldehyde weighed out Components be added as a 1-indanone appearance Weight difference based on is off white in the mass of the erlenmeyer hard in texture. 3-4-dimethoxybenzaldehyde 2) Mix the two solids using 15 Solid. It is white a metal spatula until they in color, as the texture liquify of sugar. Crystals are grainey. 3) to the flask add finely As contents liquified the ground NaOH. MIX flask Color of crystals turned yellow Contents until a solid is and melted quickly Produced (0.059) 2) Contents liquified 4) Let flask contents sit for (and turned yellow Quickly. took 5 mins to liquity 10-15 minutes. Add to 2 mL of 10% hol to the flask. 3) 0.052g Anhydrous NaOH added. Anhydrous Put a drop of solution on pH NaoH was white in color paper to make sure mix is and was very thin and acidic. Add a little more HCL until it IS acidic. Color of solution grainey to the touch" 5)vacuum filter product to Collect solid product. Record weight and apperance of Product remaind yellow upon Nach addition 4Solution took s minutes to Solidify the solution turned dark orange and had a Jello like texture, then the solution liauified more and hardened quickly the solution ouas orange in color product name: (26)-2-C3,4-dimethoxybenzylidene)-2-ındanone Literature melting point :: 178-181°C Melting point range of product: 176.80182 179°C -183°C erre or CH₂ H3C-6 NEE NIE Recrystallization Drecrystallize product using ghet content sit for is minutes from to 2:00pm - 2:15pm. a minimal amount of hot The solution dissolved 90'4. ethanol /10% water to completely dissolve product after adding on Steam just over a M. (23 drops) bath. Let Solution cool, then Solution turned the tan place in ice bath Vacuum Filter and record weight (with slight) orange tent in Color and apperance of the product. 5 product was Vacuum filtrated. 2) obtain melting point and product weight: 0.5889 product apperance: light orangeltan Cannotate). Submit WI Reoduct in color. Crystals were big report form. in apperances, but still grainey in texture. Recrystallization 1) used 25 mLs to recrystallize the product the color of solution was a vibrant yellow color. did not vacuum filtration to remove un dissolved impurity 2) placed filtrate in ice bath. filtrate was a cloudy bright yellow color. 3) The product turned white w/ a slight yellow tint NFE 0.215 g of product obtained 0.7959-65.41. 0.429
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Explanation & Answer

I have uploaded both documents. One as a labeled IR and another with the questions answered. Feel free to ask me any other follow up questions! 😎

Csp3 -H

Csp3 –O
cyclic
C–O
Alkyl ether

C–O
Aryl-Alkyl ether

C–C
Alkene


Name: ________________________________________________________

Organic Chemistry II Lab (CHEM 310)
Aldol Post-Lab Instructions & Report For...


Anonymous
I was having a hard time with this subject, and this was a great help.

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