Principles of Instrumental Analysis
7th Edition
ISBN: 9781305577213
Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Question
Chapter 16, Problem 16.6QAP
Interpretation Introduction
Interpretation:
For the N-H stretch, the wavelength and wave number of the fundamental band should be determined.
Concept introduction:
In an
The wave number can be defined as the wavelength per unit distance. The wave number is expressed in
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Functional groups such as anhydride, carboxylate (but not carboxylic acid), nitro, primary amino give two stretching vibrational bands in the infrared spectrum. What is the origin of these two bands ?
What would be the wavelength of the Stokes Raman shift if the C-H bond were probed with a 405 nm laser? Sketch the resulting spectra, including Rayleigh scattering – indicate wavelengths on the sketch.
The wavenumber of the fundamental vibrational transition of Cl 2 is 565 em·'. Calculate the force constant of thebond.
Chapter 16 Solutions
Principles of Instrumental Analysis
Knowledge Booster
Similar questions
- This question pertains to vibrational spectroscopy. Which of the following molecules would have a pure vibrational spectrum and why? HCl, CO2, N2, H2O What is the selection rule for vibrational spectroscopy? The wavenumber of the fundamental vibrational transition of Cl2 is 565 cm-1. Calculate the force constant of the bond.arrow_forwardWhich has a lower characteristic stretching Frequency, the C=O bond or band C-O bond.arrow_forwardConsider the molecule Br2. The energy (in cm-1) required to excite Br2 from the ground vibrational state to the 1st excited vibrational state is 323.2 cm-1. Is this molecule IR active? Is the molecule Raman active? Explain?arrow_forward
- If a hypothetic vibrational motion of a molecule can be described by Tvib = 2A1 + E, within the point group Cav, how many bands/peaks would you expect to see in its IR spectrum? Explain your reasoning. C (4mm) E 2C, C, 20, 20, h=8 A, 1 1 1 1 x + y', 2 1 1 1 A, B, B, 1-1 -1 R. 1 -1 1 -1 x- y 1 -1 1-1 xy 2 0 -2 0 (x, y) (R, R) (2x, y2) 3.arrow_forward3. If a hypothetic vibrational motion of a molecule can be described by Tvib = 2A1 + E, within the point group C4v, how many bands/peaks would you expect to see in its IR spectrum? Explain your reasoning. C, (4mm) E 2C, C, 20, 20. h = 8 1 1 1 1 x² + y', z2 A, 1 1 1 -1 -1 R_ B, 1 -1 1 1 -1 x² – y? B, 1 -1 1 -1 1 xy 2 -2 0 0 (x, y) (R, R) (zx, yz)arrow_forwardCalculate the fundamental vibrational wavenumber of carbon monoxide, considering it to behave like a harmonic oscillator with a force constant 1902.5 Nm. By how much will this wavenumber change if the molecule contains the isotope BC instead of the more abundant 12C? Use m 12u for C, m 13u for 13C and m=16u for 160. OFocus W DELL Esc Ff F2 F3 F4 F5 F6 F7 F8 F9 F10 F1 F12 PS BACK- SPACEarrow_forward
- The hydrogen hal ides have the following fundamental vibrational wavenumbers: HF HCI HBr HIv/cm-1 4138 2992 2649 2308(a) Calculate the force constants of the hydrogen-halogen bonds. (b) Predict the fundamental vibrational wavenumbers of the deuterium hal ides.arrow_forwardCalculate the frequency of the J = 5 + 4 transition in the pure rotational spectrum of 12c160. Assume the equilibrium bond length is 106.38pm. Frequency is Hz What is the corresponding wavenumber? cm-1arrow_forwardThe following are infrared absorption wavenumbers (in cm) of two diatomics. Calculate the force constants of the bonds and identify which bond is stiffer. а. H3$Cl: 2990 (in cm) and H$ Br: 2650 (in cm)arrow_forward
- 6) The wavenumber of the fundamental vibrational transition of 79Br8¹Br is 323.2 cm¹¹. Calculate the spring constant (k) of the bond. (note: 79Br = 78.9183 amu and 8¹Br = 80.9163 amu)arrow_forward(a) Draw a rough schematic of the series of resonances corresponding to a vibrational transition for a diatomic. Label the P and R branches, explain what the difference is between them, and indicate what the spacing is between the resonance lines. (b) What is the main information about a diatomic molecule that one can obtain from vibrational and rotational transition frequencies (assuming that the reduced mass is known)?arrow_forward4. Is the C=O stretching frequency the same for acetone and deuterated acetone? Explain your answer. Identify C O overtone in acetone spectrum which corresponds to the transitionn from ground level n= 0, to the second excited levarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
Physical ChemistryChemistryISBN:9781133958437Author:Ball, David W. (david Warren), BAER, TomasPublisher:Wadsworth Cengage Learning,
Principles of Instrumental Analysis
Chemistry
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Cengage Learning
Physical Chemistry
Chemistry
ISBN:9781133958437
Author:Ball, David W. (david Warren), BAER, Tomas
Publisher:Wadsworth Cengage Learning,