Using the particle in a box model, the wavelength of radiation, in nm, needed to excite electronically to the first ited state, a linear conjugated hydrocarbon of length 13.5 angstroms and containing 10 -electrons is: 744 nm B) 588 nm C) 444 nm D) 844 nm E) 464 nm F) 546 nm Q6. Born's interpretation of the wavefunction, W, states that: A) 4 must be finite everywhere C) W* W dt equals 1 B) The probability of finding particle in a volume element dt equals * dt D) The probability of finding particle in a volume element dt equals ww

Using the particle in a box model, the wavelength of radiation, in nm, needed to excite electronically to the first ited state, a linear conjugated hydrocarbon of length 13.5 angstroms and containing 10 -electrons is: 744 nm B) 588 nm C) 444 nm D) 844 nm E) 464 nm F) 546 nm Q6. Born's interpretation of the wavefunction, W, states that: A) 4 must be finite everywhere C) W* W dt equals 1 B) The probability of finding particle in a volume element dt equals * dt D) The probability of finding particle in a volume element dt equals ww

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter20: Dienes, Conjugated Systems, And Pericyclic Reactions

Section20.3: Uv-visible Spectroscopy

Problem 20.5P

See similar textbooks

Similar questions

The particle in a box (PiB) model can be applied to electrons which move freely in a molecule such as π electrons. 1,3-butadiene CH2=CH-CH=CH2 has an absorption peak in the UV-Vis spectrum at 290 nm. This peaks is assigned to the π → π* transition of the lowest energy. This transition is also called the HOMO → LUMO transition. As a simple approximation, let’s consider molecule of butadiene as being potential 1D box of length 3 * 1.4 Å = 4.2 Å, when counting three carbon-carbon bonds each 1.4 Å long. Also let’s consider the four π electrons occupy molecular orbitals MOs and energy of MOs is calculated according to the PiB model. a) Sketch the scheme of MOs of butadiene molecule and populate them with electrons. b) Calculate the wavelength of light λcalc which corresponds to absorption of light and excitation of π electron from the HOMO to the LUMO in the molecule of butadiene. c) Compare this calculated λcalc with experimental value of λexp = 290 nm provided above, and explain the…
Show that h*c= 1240 eV*nm
4. Identify functional groups in the following Fourier Transform Infra-Red (FTIR) spectra for the given chemical structures. Write your answer in the box.
Adenine has a molar extinction coefficient of 7020 mol dm–3 cm–1 at a wavelength of 265 nm and a characteristic NH2 bending vibration at 1650 cm–1. Show your working for each stage of this question. a) Calculate the transmission of 265 nm light through a 2.0×10–4 molar solution of adenine in a 0.5 cm wide cuvette. b) Calculate, ω, the fundamental frequency of the NH2 bend (in s–1).
Give 3 examples of 2D NMR? Please answer at your own easy words. Answer should be to the point.
The followinf infra-red spectrum is of a boron cross-linked siloxane polymer. Determine the functional groups present in this molecule.
Benzene is usually modeled as a particle on a ring, however we can assume that the six π electrons are delocalized within a square plate of side a. Calculate the value of a that would account for the 268 nm ultraviolet absorption in benzene.
Calculate the resolving power required to separate the molecular ions of: (A) C3H6S and C5H12D (B) C18H18O and C18H20N Use masses to 4 decimal places.
Determine the possible values for s2p1 configuration and use them to prepare a microstate table and assign the ground state term.
- For 7Co™ calculate:- A) magnetic state (term symbol) B) total magnetic moment C) total number of multiplets D) spin orbit interaction F) Is it Dia, Para, or Ferromagnet
plz give answer in detail
The “signature” infrared absorption that indicates the presence of a C-H stretching motion in a molecule occurs at wavelengths near 3.4 × 10-6m. Use this information to estimate the force constant of the C-H stretch.Take the reduced mass in this motion to be approximately equal to the mass of the hydrogen atom (a good approximation when the H atom is attached to a heavy atom).