3h2AE21 =(9.35E-18 J)8mL²(3)(a) Calculate the energy using a "box" length that corresponds to the average C=C bond length of139 pm and compare that to the experimental energy calculated using max = 162 nm (1.23E-18J)(b) You should have discovered a large discrepancy between the values that you calculated in (a).Based on our discussions of the particle-in-a-box model, what do you think is the reason for thediscrepancy.(c) Propose a technique for correcting the model to better align with experimental results.

This question is based on the energy of a particle moving in a one-dimensional box. a) The…

Answered: 3h2 AE21 = (9.35E-18 J) 8mL² (3) (a)…

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter5: Thermochemistry

Section: Chapter Questions

Problem 5.26QE

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he atomic radii of two hypotheticalM2+and N2ions are 0.070 and 0.160 nm, respectively.(a)Calculate the attractive energy between these two ions at r= 0.28nm, ris the separation distance between two ions;(b)Calculate the attractive forcebetween these two ions at r= 0.28nm, ris the separation distance between two ions;(c)Calculate the force of attraction between these two ions at their equilibrium interionic separation (i.e., when the ions just touch one another).(d)What is the force of repulsion at this same separation distance(i.e. their equilibrium interionic separation?
1. a) Calculate the numerical values of the energies of the first four energy levels in hydrogen in units of both joules (J) and in electron-volts (eV). The first four energy levels are found substituting n = 1, 2, 3, 4 into the equation you found in section (f) above. Show all work. b) Use r = n²ħ²/(e²km) to calculate numerical values for the radii of the first four allowed electron 'orbits' in hydrogen, in units of m. The radius of the 'orbit' closest to the nucleus is called the Bohr radius and is given the symbol ao. (You should notice that each radius is a multiple of the Bohr radius, ie. when n = 1 then r = ao, if n = 2 then r = 2² ao, at n = 3 then r = 9 ao, etc.) 1 2 3 4 c) Summarize your numerical results in the following table; Quantum number n Radius of electron's 'orbit' (m) Electron Energy (J) Electron Energy (eV)
The dipole moment of chlorine monofluoride, ClF(g), is 0.88D. The bond length of the molecule is 1.63 Å. (a) Which atomis expected to have the partial negative charge? (b) What is thecharge on that atom in units of e?
18. When one electron is added to an oxygen molecule, a superoxide ion (O₂) is formed. The addition of two elec- trons gives a peroxide ion (O2). Removal of an electron from O₂ leads to O₂. 2 (a) Construct the correlation diagram for O₂. (b) Give the valence electron configuration for each of the following species: Oz, O₂, O₂, O3-. 2 (c) Give the bond order of each species. (d) Predict which species are paramagnetic. (e) Predict the order of increasing bond dissociation energy among the species.
For each of the following processes, does the potential energyof the object(s) increase or decrease? (a) The distancebetween two oppositely charged particles is increased.(b) Water is pumped from ground level to the reservoir of awater tower 30 m above the ground. (c) The bond in a chlorinemolecule, Cl2, is broken to form two chlorine atoms.
The dissociation energy of a carbon–bromine bond is typicallyabout 276 kJ/mol. (a) What is the maximum wavelengthof photons that can cause C—Br bond dissociation?(b) Which kind of electromagnetic radiation—ultraviolet,visible, or infrared—does the wavelength you calculated inpart (a) correspond to?
At large interatomic separations, an alkali halide moleculeMX has a lower energy as two neutral atoms, M + X; atshort separations, the ionic form (M+)(X-) has a lowerenergy. At a certain distance, Rc, the energies of the twoforms become equal, and it is near this distance that theelectron will jump from the metal to the halogen atom during a collision. Because the forces between neutral atomsare weak at large distances, a reasonably good approximation can be made by ignoring any variation in potentialV(R) for the neutral atoms between Rc and R - `. For theions in this distance range, V(R) is dominated by theirCoulomb attraction.(a) Express Rc for the first ionization energy of the metalM and the electron affinity of the halogen X.(b) Calculate Rc for LiF, KBr, and NaCl using data fromAppendix F.
(a) Calculate the energy in joules of a 3.23 g object moving at a speed of 713 m/s.Ek = J(b) Determine how much greater the electrostatic energy is between charges of +2 and −2 than it is between charges of +1 and −1 (assume that the distance between the charges is the same in each case).1.5 times2.0 times2.5 times3.0 times3.5 times4.0 times4.5 times5.0 times
Prove that the potential energy of the electron is Etotal -e?/ (8πεoΥ)
5.) Electron Configurations for Ions: Supply the ground state electron configurations for the following ions. You many use the short-hand notation (e.g. Na*: [He]2s 2p°). (a) N (b) Mg*. (c) O (d) Sc* (e) Sn2+ (f) Ar 6.) Formulas of Ions: Predict the formulas of the most stable ions of the following elements (a) Na (b) Mg (c) S (d) Al (e) Br (f) P
Write the charge and full ground-state electron configuration of the monatomic ion most likely to be formed from each atom: (a) CI (b) Na (c) Ca Which of the formed ions will be least stable? -- --

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