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The homologous series of primary
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- Carvone is an unsaturated ketone responsible for the odor of spearmint. If carvone has M+=150 in its mass spectrum and contains three double bonds and one ring, what is its molecular formula?arrow_forwardWhich one of these four compounds would give a 13C NMR spectrum with only these three peaks, one at 210, one at 40 and one at 20? H3C OB OD 13C NMR delta (8) values C=O of ketones, aldehydes C=O of acids, esters, amides C=C and C=N C-X (where X = halogen, O) base position, alkyl C OC A OA CH3 H3C B CH3 H3C1 220-200 160-180 100-150 40-70 0 - 40 CH3 H₂C D CH3arrow_forwardAccording to the HNMR and structure of the compound, which protons in the structure match with the peaks? (singlet = s, doublet = d, triplet = t, quartet = q, multiplet = m)arrow_forward
- The proton ¹H (Hydrogen) NMR of a compound, C7H7CI, has the following peaks. Which compound below best fits the data? 10 9 HPM-01-022 2H Doublet 8 7 2H Doublet 6 5 ppm 4 3H Singlet 3 2 1 0arrow_forward10. The proton NMR of a compound has the following peaks. Which compound below best fits the data? A OCH₂CH₂Cl NO₂ B OH CH-CH3 CI broad singlet 55.17 (1H) doublet o 1.49 (3H) quartet & 5.00 (1H) doublet o 7.22 (2H) doublet o 7.38 (2H) C CH₂ CH2-OH CH₂ D CH₂-OH CIarrow_forward2. Consider the two ¹H NMR spectra sketched below that correspond to the molecule shown. Assign the peaks in each spectrum to the different sets of equivalent protons in the molecule. Why do the spectra for this molecule look different when measured at different temperatures? IN 84°C M 38°C 3 N 1 ppmarrow_forward
- The mass spectrum of an alcohol (C5H12O) exhibits a base peak at m/z =59. Is the alcohol most likely pentan-1-ol, pentan-2-ol, or pentan-3-ol? Explain.arrow_forwardу Give the major peak that would be present in the functional group re following compounds: 2800 OH OH 2700 hydovcoad a ing row X Xarrow_forwardWhich of the following molecules matches the given data? (Note: All the molecules have a M+ = m/z 102) C5H10O2 base peak = m/z 43arrow_forward
- For the 1 H NMR spectrum of acetyl salicylic acid shown below, assign each signal to the proton to which it corresponds (the COOH proton does not appear on this spectrum).arrow_forward1. 1H-NMR spectrum of 1,3-propanediol (HO-CH2-CH2-CH2-OH) shows a quintet at 1.81 ppm, a singlet at 2.75 pm, and a triplet at 3.83 ppm. Assign each signal to the protons it corresponds to in the molecule. Explain the splitting pattern observed for each signal.arrow_forward(3) These natural compounds will have different numbers of 1H-NMR signals in different NMR solvents like CDC13 and methanol-d4. How many signals do you anticipate for each compound respectively in CDC13 and methanol-d4? LOCH 3 OHC. vanillin OH LOH acetoaminophen HO thymolarrow_forward