2011SpChem1B_PS4Solutions

2011SpChem1B_PS4Solutions - Chemistry1B Spring2011...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Chemistry 1B Spring 2011 Unit 2, Problem Set 4 Answer Key Chapter 6 34. Suppose we remove three electrons from CO 2 to create the ion CO 2 3+ . Is the dissociation energy of the resulting ion larger or smaller than that of CO 2 ? How will the C O bonds change? Explain your answers. Electron configuration of CO 2 (see figure 6.28): (2s A ) 2 (2s B ) 2 ( σ s ) 2 ( σ p ) 2 ( π x,y ) 4 ( π nb x,y ) 4 Removing three electrons in this configuration would lead to the nonbonding orbital only having one electron. Since the nonbonding orbital does not participate in the bonding of the molecule, the C O bonds will not change and there will be little effect on the dissociation energy. 52. Draw a Lewis electron dot diagram for each of the following molecules and ions. Formulate the hybridization for the central atom in each case and give the molecular geometry sp 2 sp 3 sp 3 sp sp 2 Trigonal planar Tetrahedral Trigonal pyramidal Linear Trigonal planar 54. Describe the hybrid orbitals on the chlorine atom in the ClO 4 and ClO 3 molecular ions. Sketch the expected geometries of these ions. ClO 4 ClO 3 sp 3 hybridized sp 3 hybridized Tetrahedral geometry Trigonal pyramidal geometry (steric number =4) (steric number =4)
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
62. Discuss the nature of the bonding in the nitrate ion (NO 3 ). Draw the possible Lewis resonance diagrams for this ion. Use the VSEPR theory to determine the steric number, the hybridization of the central N atom, and the geometry of the ion. Show how the use of resonance structures can be avoided by introducing a de localized π MO. What bond order is predicted by the MO model for the N O bonds in the nitrate ion?
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern