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Which has a lower wavenumber, C-H or C-C?
C-C mass is 12+12= 24
C-H mass is 12+1= 12 ,
the one with the highest mass has the lowest wavenumber, so the answer, is it C-C?
Step by step
Solved in 2 steps with 2 images
- 3. Identify C-Cl stretching peaks in CDC13 and CHC13 spectra. Do these peaks have exactly the same frequencies for both compounds? Explain your answer. 4. Is the C==O stretching frequency the same for acetone and deuterated acetone? Explain your answer. 5. Identify C==O overtone in acetone spectrum which corresponds to the transition from ground level, n=0, to the second excited level, n=2.Suppose you are analyzing mercury ions (Hg2+) in drinking water samples with atomic absorption spectroscopy. If the Hg2+ signal varies by a matrix of sample, which of the following should be used as a standard for calibration? Either cations or anions can be used if they are different from Hg2+, 0 H20 Any anions can be used if they are different from Hg2+ Any cations can be used if they are different from Hg?". Hg2+4. NMR: (8 pts) Look at the given molecules and answer the following questions H H Compound A Compound B Compound C OH H Compound D How many different chemical environments (number of peaks) would you expect to see in the 'H NMR for each molecule? A = B = C = D: = Predict how many sub peaks per multiplet would be seen in the signal for the indicated hydrogen due to spin-spin splitting? A = B = C = D = How many H of that particular type (integration) would you expect to see at the indicated hydrogen? A = B = C = D= =
- What are the wavenumber values for the following organic functional groups: C=OAldehyde, Ketone, Amide, Carboxylic acid, and Ester? C=C, C=N, C-H, and C-C.Choose the most intense mass spectrum signal for 12 m/z 29 m/z 41 m/z 57 m/z O A ВIsoamyl acetate is the primary component of artificial banana flavor. Which signals will be in the positive phase, negative phase, or nonexistent in normal 13C NMR, DEPT-90, and DEPT-135 of isoamyl acetate?
- 19. Draw the structure of the cation which gave the base peak at m/z = 57 in d. Don't put the cation in a bracket. H C Marvin JS by ChemAxon S F + P [글 D +Below is the mass spectrum of p-chlorotoluene Identify which peak belongs to the M+ peak/s.Which chemical shift and peak shape (spin-spin splitting) do you predict for the highlighted C-H bond(s)? A 12ppm B 10ppm C 7-Sppm D 5-6ppm E 4ppm F 2ppm G singlet H doublet I triplet J quartet K multiplet L lppm
- -·|· 4.0 Match the peaks in this spectrum with hydrogens on the structure below. A) I: 0.91 ppm II: 3.29 ppm III: 1.52 ppm IV: 3.23 ppm H3C | 3.0 || H₂ CH3 CH CH3 III IV 2.0 ppm 1.0 B) I: 0.91 ppm II: 3.29 ppm III: 3.23 ppm IV: 1.52 ppm C) 1: 3.23 ppm II: 3.29 ppm +HO 4. (a) How many different signals would you expect in the 1HNMR of this product? (b) How many different signals would you expect in the 13 CNMR of this product?Rank each of the bonds identified in order of increasing wavenumber. 1 H 2 0 > 3 Increasing wavenumber 4 > - OH 5 > -H 6 7 N
