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- 8 11) Chemical Formula: C₁0H12O2 IR: strong peak 1720cm-¹ 10 1H 8 12) Chemical Formula: C9H200 IR: strong broad 3300cm-1 2H 2H PPM 10x2= 20+2=22=12=10/2=5 6 PPM septet 1H 9x2=18+2=20-20=0 2 0 6H9 What compound has a formula of C5H120 * ?and a peak at 3300 cm-1 (ähäi 1) Ether Alcohol Aldehyde Ketone1-31. We shall learn when we study molecular spectroscopy that heteronuclear diatomic molecules absorb radiation in the microwave region and that one determines directly the so-called rotational constant of the molecule defined by B = 8721 where I is the moment of inertia of the molecule. Given that B = 3.13 × 105 MHz for H35C1, calculate the internuclear separation for H35C1. The atomic mass of H and 35C1 are 1.008 and 34.97, respectively.
- VV) 8 8 7 18) Chemical Formula: C9H₁20 IR: Strong broad peak at 3200 cm-¹ 5H 5 6 -10 1H 4 PPM 1H 3 PPM ~ 9x2=18+2=20=12=8/2=4 -3 2H N- → −2 O 3H8 14) Chemical Formula: C₁1H₁403 IR: strong peak 1720cm-¹, strong broad 3300cm-¹ 2H 2H 2H 6 1H 5 1H 4 PPM 11x2=22+2=24 3H 3 2 3H 15) Chemical Formula: CsH8O₂ 5x2=10+2=12-8=4/2=2. IR: strong peak 1720cm-¹, 1650cm-1( hard to see but, all peaks that integrate to 1H are doublet of doublets)2. Peaks resulting transitions from n → TT* are shifted to shorter wavelengths (blue shift) with an increasing of solvent polarity. * True False
- What is the significance of the max of a spectrum? What are the other uses of the spectrophotometer?Are there any peaks upfield of the 70 ppl seen belowGiven the following frequency table of data, what is the potential outlier? Value Frequency 8 1 9 0 10 0 11 0 12 0 13 0 14 0 15 0 16 1 17 4 18 10 19 4 20 6 21 2 22 3 Select the correct answer below: 8 18 16 20 22
- A compound has the chemical formula C5H11Cl. The M+ peak should be at m/z = m/z = and an M+2 peak at m/z = and there should also be an M+1 peak at If the height of the M+ peak is 27, the height of the M+1 peak should be (specify to one place after decimal) and the height of the M+2 peak should be approximately3. Fill in the following for the correspondence between % transmittance and absorbance: 100.0 % T = 0.0 absorbance 1.00 absorbance = (0.0 % T 25.0 % T = absorbance 0.25 absorbance = % TThe following molecular ion isotopic clusters correspond to derivatives of benzene (C6H6) for which one or more of the hydrogens have been replaced with chlorines or bromines. What molecular formula corresponds to each mass spectrum? . 100- 80- 60- 40- Relative intensity 20- -M+6 -M+5 -M+4 M+3 M+1 M+2 M+0 (a) -M+6 -M+5 -M+4 M+3 M+2 M+1 -M+0 (b) M+6 M+5 M+4 M+3 -M+2 -M+1 -M+0 (c) M+6 -M+5 M+4 M+3 M+2 -M+1 -M+0 (d) M+6 M+5 -M+4 -M+3 -M+2 M+1 -M+0 (e)