1. For each of the following statements, indicate whether they are true of false.⚫ mass spectrometry allows us to determine the molar mass and molecular formula of an organiccompound, as well as some of its structural features.• mass spectrometry generally allows us to determine the precise structure of an organiccompound.⚫ when a molecular ion undergoes fragmentation, weak bonds break in preference to strongbonds.• when a molecular ion undergoes fragmentation, bonds that break to form less stable fragmentsbreak in preference to those that form more stable fragments.• the only way to ionize an organic compound is by passing it through a beam of 70 eV electrons.• mass spectrometry is one of several techniques that are routinely used for the determinationof the structure of an unknown organic compound.• mass spectrometry can be coupled with gas chromatography to afford a very valuableseparation/analysis technique.• chlorides and bromides are dead easy to spot because of the characteristic M and M+2 isotopicpatterns.

True. Mass spectrometry is a powerful analytical tool that can provide information about the molar…

Answered: 1. For each of the following…

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

ChapterL2: Mass Spectrometry

Section: Chapter Questions

Problem 20CTQ

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3C2: Identify basic IR-active bonds in a standard IR data set. Use the given IR spectrum to generate a viable organic structure with a molar mass (MM) less than 200 g/mol. In your response, the structure you draw must be correlated directly to all the important IR absorbance signals in the data. IR Spectrum 4000 3000 M 1277 1254 1200 1712 2000 1600 V (cm¹) 800
What are the three[3] detection tests of elements in organic compounds that you appreciated most, and give the method on how to determine the element?
In this lab you are performing your first organic synthesis and safety information on all the materials you are using must be obtained. Companies are required to provide material safety data sheets (MSDS) for chemical compounds they sell. Please examine the MSDS for salicylic acid, available here. You will find GHS pictograms within the sheet that summarize the main hazards of this compound. The pictograms are essentially the same as the symbols on WHMIS labels, available here for reference. Based on the pictograms, whatare the main hazards for salicylic acid? Select as many answers as appropriate Select one or more: Acute oral or inhalation toxicity Flammable material Carcinogen Self-reactive substance Gas under pressure Corrosive Oxidizing material
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Use the following atomic weights and quantities to calculate the overall % yield of tetraphenylcyclopentadienone. Remember that your yield must be based on the limiting reagent, and that grams must be converted to moles. Filling out most of the chart will help. Give only two significant digits in your answer. If after rounding the answer is a whole number, do not include a decimal point. C = 12, H = 1, K = 39, O = 16 benzil + dibenzyl ketone potassium + → tetraphenylcyclopentadienone hydroxide formula formula weight grams 2.314 7.231 3.857 3.173 moles Answer: % yield
Use the following atomic weights and quantities to calculate the overall % yield of tetraphenylcyclopentadienone. Remember that your yield must be based on the limiting reagent, and that grams must be converted to moles. Filling out most of the chart will help. Give only two significant digits in your answer. If after rounding the answer is a whole number, do not include a decimal point. C = 12, H = 1, K = 39, O = 16 formula formula weight grams moles Answer: benzil + dibenzyl ketone + potassium hydroxide tetraphenylcyclopentadienone 4.135 8.646 1.140 % yield 6.956
Dr. Frank's Magical Cure-all Cough Syrup contains three ingredients, shown below. You seek to isolate these three ingredients to further quantify and analyze them, something that can be achieved via liquid-liquid extraction. Propose a flow chart demonstrating how you would separate each of the components into a distinct organic layer. This flowchart should represent all of the chemicals required for the separation, and depict accurate representations of the chemical species throughout the process. H H. НО
After combustion analysis and mass spectrometry, the molecular formula of an unknown compound was determined to be C15H1402. The first two suggested structures are shown as A and B and the IR spectrum obtained, Fig. 2, can be used to distinguish between A and B. Explain, with reasoning, which of the two structures is the correct one. IR Spectrum (thin film) 4000 A 3000 2000 1698 V (cm¹) Fig. 2 B 1600 008 1200 00S 800 008
When 2-methylpropane is monochlorinated in the presence of light at room temperature, 36% of the product is 2-chloro-2-methylpropane and 64% is 1-chloro-2-methylpropane. From these data, calculate how much easier it is to remove a hydrogen atom from a tertiary carbon than from a primary carbon under these conditions.
Use the following atomic weights and quantities to calculate the overall % yield of diphenylacetylene. Remember that your yield must be based on the limiting reagent, and that grams must be converted to moles. For problems not involving a one to one stoichiometry it may be easier to calculate the theoretical yield in grams from both reagents to determine which is truly the limiting reagent. Filling out most of the chart will help. Give only two significant digits in your answer. If after rounding the answer is a whole number, do not include a decimal point. C = 12, H = 1, Br = 80, K = 39, O = 16 formula formula weight grams moles Answer: stilbene dibromide + potassium hydroxide 19.704 1.459 theoretical yield (g) % yield diphenylacetylene 2.063
Consider analysis of a mixture of saturated and unsaturated triacylglycerols (fish oil). Consider 3 methods: IR, NMR, and GC-MS (or LC-MS).How are these methods been used to characterize these molecules? What structural information can be obtained using each method? What are the limitations of each method? Lastly, if you were to use only one which would provide the most detailed structural characterization? Include pictures (structures, spectra etc.) and references with hyperlinks.
Infrared red spectroscopy is based on the absorption of infrared addition. Only molecules that under a change in dipole moment are IR active. Explain what is meant by dipole moment of a molecule Certain molecules like N2 (NN) do not absorb IR, explain why? What causes the OH peak to be broad and how can this be prevented? The IR spectra of a nitrogenous fertilizer and an ingredient in soap are shown below. Identify the functional groups in both compounds. Justify your answers.

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