Fully annotate ms. Using specific pieces of data from the spectra please discuss how you determined the identity of the terpene unknown. Your answer should be 1-2 paragraphs.

Model 3: Ionization and Fragmentation Most mass spectrometers accelerate a molecule by first turning it into an ion, then using an electric field to accelerate it toward the detector. During standard ionization, a molecule loses one electron, the electron that is easiest to remove. The following is a hierarchy of electrons from easiest to hardest to remove: Electron in a lone pair (easiest) Electron that is part of a double bond (pi bond) Electron in a single bond (hardest) Knocking off an electron to make a +1 ion can be a harsh process. This harsh treatment often results in a broken bond, generating two smaller pieces, a +1 ion and a neutral fragment. (Note that only the ion is accelerated and detected.) ● 7. ● Critical Thinking Questions 6. If acetone is ionized, which electron is most likely to be knocked off? Replace this electron with a + (to indicate the missing electron) on the structure of acetone → The ion you drew above is called the "molecular ion" of acetone. It is…

values : Experimental values of IR Peaks compared to literature values for Benzoic Acid (ATR method) Bond Stretch Functional group Experimental Peak(cm-1) Literature Peak(cm-1) O-H Carboxylic acid 2800 3200-2200 C=O Carboxylic Acid 1674.9 1677.5 C=C (ring) Aromatic stretch 1579.5 1581-1418.5 C-H Aromatic Sp2 3100   C-O stretch 1285.5   O-H Alcohol 929.89   table 3: Experimental values of IR peaks compared to literature values for 2-Naphthol Bond Stretch Functional group Experimental Peak(cm-1) Literature Peak(cm-1) O-H Alcohol 3219.1 3400-3080 C-C Aromatic (ring) stretch 1507.6   C=C Aromatic stretch 1597.7 1627.3-1377.8 C-H Aromatic Sp2 3050   C-O Secondary alcohol stretch 1168.9   IR results used to prove that the compounds are effectively separated. Discuss on bothdiagnostic peaks and fingerprint region.

Imagine that you were given an unidentified aldehyde and performed another Wittig reaction in lab. Use the given data to answer the questions below and identify your original aldehyde. 8 5 R A H 7 + 15 1 C/O (C6H5)3P- Below is shown the ¹H spectrum for the pure alkene product of this experiment. Interpret the signals to identify "R" by assigning each hydrogen by chemical shift, multiplicity (splitting), integration, and any other significant features. 6 A B -5 NaOH 4 PPM (b) One possible alkene product is shown in the reaction above. Draw the other alkene product R 3 H 2 + (C6H5)3PO 2 1 6 1 (a) Label which proton in the product above corresponds to each signal A and B. Explain your assignment and what this tells you about the "R" group. (c) What was your aldehyde starting material? (What is "R"?) 1

From the spectra A-J and in the NMR Spectra tile, select the letter that corresponds to 1. methyl butanoate2. benzaldehyde3. 1-chlorobutane4. 1-chloro-2-methylpropane5. butan-2-one6. propan-2-ol7. propanal

Based on the spectra provided, draw the structure. Label each unique carbon and hydrogen with the letters A, B, C… for use in assigning NMR peaks. fill in the data table assigning peaks in each spectrum. You should assign: • All 1H NMR peaks • Significant IR peaks above 1600 cm Example of what the table should include (imagine the structure of ethanol is drawn with the CH3 hydrogens labeled as A, the CH2 hydrogens labeled as B, and the OH hydrogen labeled as C) :  hydrogen proton chemical shift  integration splitting pattern couples to.. A 1.2 3 triplet B B 3.7 2 quartet A C 2.6 1 singlet -

Label all relevant peaks that are above the fingerprint region (>1500 cm-1) in all the IR spectra given below with the functional group that those peaks are representative of (make sure not to forget the aldehyde C–H bonds, which many IR charts do not list). Based on the table you completed with predicted Diagnostic IR peaks for each compound, and based on the IR spectra you had labeled, match each compound with its spectrum.

Please circle the answers

Construct a simulated 'H NMR spectrum for the given structural formula. Drag the appropriate splitting patterns to the approximate chemical shift positions; place the integration values above their associated signal. Splitting patterns and integrations may be used more than once, or not at all, as needed. Likewise, some bins will remain blank. Note that peak heights are arbitrary and do not indicate proton integrations. A HO 7 6 3 2 1 0 ppm 2H 3H 1H 5 4 Answer Bank 4H

urgent :i am supposed to match the peaks on the compound to where it is on the nmr spectrscopy. i started matching but am not sure if i am right, please help finish and correct if wrong