3. Use the following data to estimate AH° for magnesium fluoride.Mg(s) + F2 (g)MgF2 (s)-2913 kJ/molLattice energyFirst ionization energy of MgSecond ionization energy of MgElectron affinity of FBond energy of F2Enthalpy of sublimation for Mg735 kJ/mol1445 kJ/mol-328KJ/mol154KJ/mol150kJ/mol

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Answered: 3. Use the following data to estimate…

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter9: Covalent Bonding: Orbitals

Section: Chapter Questions

Problem 97CP: Use the MO model to determine which of the following has the smallest ionization energy: N2, O2,...

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The energy of the 1s atomic orbital of hydrogen is -13.6 eV. a) The satabilization energy of the bonding molecualr orbital compared to the atomic orbitals is of 3.2 eV. What is the difference in energy between the H2 molecule and two isolated hydreogen atoms? b) What is the ionization energy of the H2 molecule in eV? In joules? c) What is the wavelength of a photon should have to achieve ionization of the H2 molecule? What domain of the spectrum is it in?
Carbon monoxide, CO, is isoelectronic to N2. (a) Draw aLewis structure for CO that satisfies the octet rule. (b) Assumethat the diagram in Figure 9.46 can be used to describethe MOs of CO. What is the predicted bond order forCO? Is this answer in accord with the Lewis structure youdrew in part (a)? (c) Experimentally, it is found that thehighest energy electrons in CO reside in a σ-type MO. Isthat observation consistent with Figure 9.46? If not, whatmodification needs to be made to the diagram? How doesthis modification relate to Figure 9.43? (d) Would you expectthe π2p MOs of CO to have equal atomic orbital contributionsfrom the C and O atoms? If not, which atom wouldhave the greater contribution?
(a) What does the term paramagnetism mean? (b) How can onedetermine experimentally whether a substance is paramagnetic?(c) Which of the following ions would you expect to beparamagnetic: O2+ , N22 -, Li2+ , O22 - ? For those ions that areparamagnetic, determine the number of unpaired electrons.
Which of these isometric species has the largest radius. Sr2+, Se2--,Rn+,Br-
Carbon disulfide (CS2) is a toxic, highly flammable substance.The following thermodynamic data are availablefor CS2(l) and CS2 (g)at 298 K: (a) Draw the Lewis structure of the molecule. What do youpredict for the bond order of the C¬S bonds? (b) Use theVSEPR method to predict the structure of the CS2 molecule.(c) Liquid CS2 burns in O2 with a blue flame, formingCO2(g) and SO2(g). Write a balanced equation for this reaction.(d) Using the data in the preceding table and in AppendixC, calculate ΔH° and ΔG° for the reaction in part (c).
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?
Given the following thermodynamic data, calculate the lattice energy of LiCl:ΔH°f[LiCl(s)] = -409 kJ/molΔH°sublimation [Li] = 161 kJ/molBond energy [Cl-Cl] = 243 kJ/molIE1 (Li) = 520 kJ/molEA1 (Cl) = -349 kJ/mol -1682 kJ/mol -984 kJ/mol -1560 kJ/mol -862 kJ/mol -1213 kJ/mol
Why do third – period elements expand their covalence above four?
Find thsee values for cubic , triclinic , trigonal, orthombic monoclinic tetragonal hexagonal
84. , What are the electronic configuration of Fe2+? a. [Ar]3d6 b. [Ar]3d5 c. [Ar]3d64s0 d. [Ar]3d4
Use the Born Haber cycle (show relevant steps) to determine the lattice energy of CsCl (s) from the following data: ΔHf°[CsCl(s)] = -442.8 kJ/mol; enthalpy of sublimation of Cesium is 78.2 kJ/mol; enthalpy of dissociation of Cl2 (g) = 243 kJ/mol Cl2 ; IE1 for Cs(g) = 375.7 kJ/mol; electron affinityenthalpy-EA1 for Cl(g) = -349kJ/mol.
How can I show the relevant steps to calculate Deltaf H degrees of MgCl(s) given the following data: Enthalpy of sublimation for Mg(s) = + 146 kJ/mol Enthalpy of dissociation of Cl2 (g)= +244 kJ/mol EA (electron affinity ) of Cl- = -349 kJ/mol First ionization energy of magnesium Mg (g) = 738 kJ/mol Lattice energy of MgCl(s) = -676 kJ/mol

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