why is a calibration curve likely to be linear over a wider range of concentrations at the wavelength of maximum absorption compared to a wavelength on a shoulder of the absorption curve?

Q: Explain microwave spectra of rigid and non rigid rotors.

A: Microwave spectra mainly depends upon the transition of the rotational energy levels of the…

Q: 7. You observe a C=C stretch in a Raman spectrum at 1624 cm'. You acquired this spectrum with the…

A: Raman spectroscopy is a form of vibrational spectroscopy technique where vibrational, rotational…

Q: A calibration plot for a particular absorbing species is constructed according to the Beer's…

A: The expression of beer's law is shown below:A =ε c l where; A = absorbance c = concentration l =…

Q: Describe the formation of (i.) line emission spectra, (ii.) line absorption spectra.

A: Interpretation: The formation of line emission spectra and line absorption spectra are to be…

Q: 3. Predict the absorption wavelength of a linear conjugated hydrocarbon molecule with six carbon…

A: Linear conjugated hydrocarbon molecule with six carbon atoms 1. Linear molecule 2. Conjugation…

Q: What is the relationship between coupling constant in hertz and operating frequency?

A: The relationship between coupling constant in hertz and operating frequency.

Q: Explain the basis of the Franck-Condon principle and how it leads to the formation of a

A: To Explain: Basis of Franck-Condon principle and how it leads to the formation of Vibrational…

Q: List the reasons why the N-H functions appear different in the infrared spectrum. Supply three major…

A: The N-H (amide) stretch is a very important and strong functional group in the infrared (IR)…

Q: What information can be obtained from IR and Raman spectra and how this can be applied in COSMETIC…

A: IR active molecules are Raman inactive and vice-versa.

Q: What is the fine structure, draw the fine structure of n=2 and n=3 shells of hydrogen and the…

A: In spectroscopy, when the main spectral lines of an atom splits into two or more components then…

Q: determine the number of vibrational modes that will be observed in an Infrared experiment and a…

A: To identify the total number of vibrational mode that will be observed in the infrared spectrum and…

Q: The vibrational frequencies of most chemical bonds are around 10^13 per second. Calculate the  the…

A:

Q: 2. Write the expressions you would need to solve to determine the wavelength, frequency and…

A: The Rydberg equation is a mathematical expression that can be used to determine the values of…

Q: For CO2 gas, only the C - O symmetric stretching vibration energy is Raman active and has a value of…

A: The objective of the question is to calculate the wavelength of the Raman scattering Stokes line and…

Q: Use the Analytical procedures in analytical chemistry to gain qualitative and quantitative…

A: SOLUTION: Step 1: Palm oil is a bright reddish/orange oil produced from the mesocarp of the fruits…

Q: (a) Draw a rough schematic of the series of resonances corresponding to a vibrational transition for…

A: P Branch (Pfund): This branch is formed when the molecule loses one unit of vibrational angular…

Q: (b) The UV-visible electronic absorbance spectrum of the following azo dye has an absorption maximum…

A: Given:Determine the difference.A type of synthetic dye that contains the azo group , which gives…

Q: which of the following is a reason electronic spectra of molecules typically contain broad peaks? a.…

A: The objective of the question is to identify the reason why electronic spectra of molecules…

Q: what quantum mechanical principles play a role in infrared spectroscopy? What applications is…

A: The answers are given below

Q: i) Discuss the differences between the AES and XPS in terms of principle and information obtained…

A: X-ray Photoelectron Spectroscopy (XPS) also known as Electron Spectroscopy for Chemical Analysis…

Q: What states of (i) benzene, (ii) naphthalene may be reached by electric dipole transitions from…

A: Refer to the character table for C3v Deducing a selection rule Is px→ py an allowed transition in a…

Q: Why is IR spectroscopy an ineffective method for vibrational studies of homo-nuclear diatomic…

A: IR Spectroscopy detects frequencies of infrared light that are absorbed by a molecule.Molecules…

Q: What resolution is required to seperate two lines at wavelength1 and wavelength2?

A: The correct answer is given below

Q: Estimate the amplitude (in m) of the smallest vibration of an HBr molecule (see the textbook example…

A: Frequency at which a Molecule vibrates is called vibration frequency.

Q: Atomic absorption spectrophotometry is a method for the quantitative determination of metal ions. a)…

A: Since you have posted a question with multiple subparts , we will solve first three questions for…

Q: What is the difference between atomic absorption and molecular absorption, giving examples?

A: The key difference between atomic spectroscopy and molecular spectroscopy is that the atomic…

Q: If the spacings between adjacent vibrational features in a photoelectron spectroscopy experiment…

A: A sigma bond of CD is more stronger than CH sigma bond because CD bond have lessee vibrational…

Q: You know that the wavenumbers of the rotational transition J = 1← 0 for 1H 35Cl and 2H 35Cl are…

A: The ΔE value represented in terms of wavenumbers for the rotational transition from J=0 to J=1, can…

Q: Create a fluorometer schematic diagram and in a spectrofluorimetric analysis, why is it required to…

A: Fluorescence describes a phenomenon where light is emitted by an atom or molecule that has absorbed…

Q: A calibration plot for a particular absorbing species is constructed according to Beer-lambert's law…

A: According to Lambert Beer's law,  Absorbance is directly proportional to the Concentration of the…

Q: Explain why HCI has a rotational spectrum but N₂ does not.

A: Given two molecules are HCl and N2 .  HCl has a rotational spectrum but N2 does not. Only  molecule…

Q: 6. Sketch a Jablonski diagram that illustrates the absorbance of a photon by a chemical species and…

A: To draw a Jablonski diagram for proton absorption indicating all the transitions…

Q: The vibrational frequency of 'H₂ is 131.9 THz. What is the vibrational frequency of 2H₂ and of ³H₂?…

A: Given ,Vibrational frequency of Objective : Calculate vibrational frequency of .

Q: (i) Explain how the mass of the particle(s) involved affects the separation between energy levels in…

A: Energy of a particle of mass m in a one dimensional box- En= n2h2/8mL2, n=1,2,3... L is length of…

Q: The ground state spectral term of the doubly ionized state (Si III) of the 14-Si element is…

A: Term Symbol: LJ2S+1 S= Total Spin Quantum Number 2S+1 = Total Spin multiplicity J=Total angular…

Q: Please don't provide handwritten solution ...

A: The objective of the question is to calculate the frequency of the J=2+1 transition in the pure…

Q: The particle in a box (PiB) model can be applied to electrons which move freely in a molecule such…

A: Given: The particle in a box (PiB) model can be applied to electrons which move freely in a molecule…

Q: Can we expect that a plot of relative fluorescence intensity vs. concentration to be linear?

A: The fluorescence intensity basically tells about emitted light. The extent of emission is defined as…

Q: (a) Use the data in Table  to find the approximate spacing between vibrational energy levels in CO.…

A: Typical values of i and B are on the order of 103 cm- and I cm-', respectively, so the spacing…

Q: What % of Hg atoms are in the excited state corresponding to absorption of a 253.7 nm photon at 2500…

A: The Hg atoms will absorb the energy from photons and get excited. The percentage of Hg atoms can be…

Q: 5. What is the basis of vibrational spectroscopy. Derive the expression for natural frequency for…

A: We will discuss the basis of Vibrational spectroscopy. It is also called as IR Spectroscopy.