Test Prep Series for AP Chemistry for Chemistry: The Central Science 14th ed AP
Test Prep Series for AP Chemistry for Chemistry: The Central Science 14th ed AP
14th Edition
ISBN: 9780134661483
Author: Edward L Waterman
Publisher: PEARSON
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Chapter 9, Problem 112AE

The energy-level diagram in Figure 9.36 shows that the sideways overlap of a pair of p
orbitals produces two molecular orbitals, one bonding and one antbonding. In ethylene there is a
pair of electrons in the bonding n orbital between the two carbons. Absorption of a photon of the
appropriate wavelength can result in promotion Of one Of the bonding electrons from the r2p to the
Ir. molecular orbital.
a. Assuming this electronic transition corresponds to the HOMO-LUMO transition, what is the
HOMO in ethylene?
b Assuming this electronic transition corresponds to the HOMO-LUMO transition, what is the
LUMO in ethylene?
c. Is the bond in ethylene stronger or weaker in the excited State than the ground state?
d. Is the C-C bond in ethylene easier to twist in the ground state or in the excited state?

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a. Draw a molecular orbital diagram for the valence electrons in the helium-hydrogen diatomic (HeH). b. Label the 2 molecular orbitals as either bonding or antibonding and describe the key differences between these types of molecular orbitals in terms of electron density. c. Calculate the bond order of HeH based on your molecular orbital diagram. d. Do you expect the bond length in the cation HeH+ to be longer or shorter than in a neutral HeH? Justify your answer based on the molecular orbital diagram and bond order for both species.
The molecular orbital (MO) diagram of OF is given below. Answer Questions 15 - 18. 2p. 2, 2e, OF F 15. How many electrons are in the two degenerate molecular orbitals (MOs)? A. There are three electrons with one MO being doubly occupied and the other singly occupied. B. There are two electrons with each MO being singly occupied. C. There are two electrons that occupy one of the two MOs. D. There are four electrons that occupy both * MOS. E. There is only one electron that occupies one of the two MOS. 16. What is the bond order? A. 0.5 B. 1.0 C. 1.5 D. 2.0 E. 2.5 17. The HOM0 is C. O D. E. 18. The LUMO is B. C. , D. E. .
a.An s orbital and a p orbital can combine to form molecular orbitals in a couple different ways. Draw a sketch of the overlap between these two atomic orbitals that would produce each of the following molecular orbitals. A. a sigma bonding MO B. a sigma antibonding MO b. For each of the following molecules, make a list of the molecules that are (i) polar, (ii) nonpolar and (iii) ionic. A. NH 3 B. H2 O C. CH3 CH2 CH3  D. NH4 Cl E. Na2 SO 4 F. CH3 Cl G. C6H6OH H. CH3COOH I. LiNO3

Chapter 9 Solutions

Test Prep Series for AP Chemistry for Chemistry: The Central Science 14th ed AP

Ch. 9.6 - Prob. 9.6.1PECh. 9.6 - Prob. 9.6.2PECh. 9.6 - Prob. 9.7.1PECh. 9.6 - Prob. 9.7.2PECh. 9.7 - Prob. 9.8.1PECh. 9.7 - Prob. 9.8.2PECh. 9.8 - Prob. 9.9.1PECh. 9.8 - Prob. 9.9.2PECh. 9 - Prob. 1DECh. 9 - 9.1 A certain AB4, molecule has a "seesaw" shape...Ch. 9 - Prob. 2ECh. 9 - Prob. 3ECh. 9 - Prob. 4ECh. 9 - Prob. 5ECh. 9 - Prob. 6ECh. 9 - In the hydrocarbon a. What is the hybridization at...Ch. 9 - The drawing below shows the overlap of two hybrid...Ch. 9 - Prob. 9ECh. 9 - 9.10 The following is part of a molecular...Ch. 9 - Prob. 11ECh. 9 - Prob. 12ECh. 9 - 9.13 a. An AB2 molecule is linear. How...Ch. 9 - a. Methane (CH4) and the perchlorate ion (C104-)...Ch. 9 - Prob. 15ECh. 9 - Prob. 16ECh. 9 - Prob. 17ECh. 9 - Prob. 18ECh. 9 - In which of these molecules or ions does the...Ch. 9 - Prob. 20ECh. 9 - How many nonbonding electron pairs are there in...Ch. 9 - Prob. 22ECh. 9 - Prob. 23ECh. 9 - Prob. 24ECh. 9 - Give the electron-domain and molecular geometries...Ch. 9 - Prob. 26ECh. 9 - Prob. 27ECh. 9 - Prob. 28ECh. 9 - Prob. 29ECh. 9 - Prob. 30ECh. 9 - Ammonia, NH3 reacts with incredibly strong bases...Ch. 9 - In which of the following AFn molecules or ions is...Ch. 9 - a. Explain why BrF4 is square planar, whereas...Ch. 9 - 9.34 Name the proper three-dimensional molecule...Ch. 9 - Prob. 35ECh. 9 - Prob. 36ECh. 9 - Prob. 37ECh. 9 - Prob. 38ECh. 9 - a. (a) Is the molecule BF3 polar or nonpolar? b....Ch. 9 - Prob. 40ECh. 9 - Predict whether each of the following molecules is...Ch. 9 - Prob. 42ECh. 9 - Prob. 43ECh. 9 - Prob. 44ECh. 9 - For each statement, irldicate whether it is true...Ch. 9 - Draw sketches illustrating the overlap between the...Ch. 9 - For each statement, indicate whether it is true or...Ch. 9 - Prob. 48ECh. 9 - Prob. 49ECh. 9 - Consider the SC12 molecule. a. What IS the...Ch. 9 - Indicate the hybridization of the central atom in...Ch. 9 - Prob. 52ECh. 9 - Prob. 53ECh. 9 - Prob. 54ECh. 9 - Prob. 55ECh. 9 - Prob. 56ECh. 9 - a. Draw Lewis structures for ethane (C2He),...Ch. 9 - a. Draw Lewis structures for ethane (C2He),...Ch. 9 - Prob. 59ECh. 9 - Ethyl acetate. C4H802, is a fragrant substance...Ch. 9 - Prob. 61ECh. 9 - Prob. 62ECh. 9 - Prob. 63ECh. 9 - Prob. 64ECh. 9 - In the formate ion, HC02- , the carbon atom is the...Ch. 9 - Prob. 66ECh. 9 - Prob. 67ECh. 9 - Prob. 68ECh. 9 - Prob. 69ECh. 9 - a. If you combine two atomic orbitals on two...Ch. 9 - Prob. 71ECh. 9 - Prob. 72ECh. 9 - Prob. 73ECh. 9 - Indicate whether each statement is true or false....Ch. 9 - Prob. 75ECh. 9 - Prob. 76ECh. 9 - Prob. 77ECh. 9 - Prob. 78ECh. 9 - Prob. 79ECh. 9 - Prob. 80ECh. 9 - Determine the electron configurations for CN+, CN,...Ch. 9 - Prob. 82ECh. 9 - Consider the molecular orbitals of the P2...Ch. 9 - The iodine bromide molecule, IBr, is an...Ch. 9 - Prob. 85AECh. 9 - Prob. 86AECh. 9 - Consider the following XF4 ions: PF4, BrF4-,...Ch. 9 - 9.88 Consider the molecule PF4Cl....Ch. 9 - Prob. 89AECh. 9 - Fill in the blank spaces in the following chart....Ch. 9 - Prob. 91AECh. 9 - Prob. 92AECh. 9 - Prob. 93AECh. 9 - Prob. 94AECh. 9 - Prob. 95AECh. 9 - Prob. 96AECh. 9 - Prob. 97AECh. 9 - Prob. 98AECh. 9 - Prob. 99AECh. 9 - Prob. 100AECh. 9 - In ozone, 03, the two oxygen atoms on the ends Of...Ch. 9 - Butadiene, C4H6, is a planar molecule that has the...Ch. 9 - The structure of borazine, B3N3H6, is a...Ch. 9 - Prob. 104AECh. 9 - Prob. 105AECh. 9 - Prob. 106AECh. 9 - Prob. 107AECh. 9 - Prob. 108AECh. 9 - Azo dyes are organic dyes that are used for many...Ch. 9 - a. Using only the valence atomic orbitals of a...Ch. 9 - Carbon monoxide, CO, is isoelectronic to N2. a....Ch. 9 - The energy-level diagram in Figure 9.36 shows that...Ch. 9 - A compound composed of 2.1 29.8%N, and 68.1%O has...Ch. 9 - 9.114 Sulfur tetrafluoride (SR4) reacts slowly...Ch. 9 - Prob. 115IECh. 9 - The molecule 2-butene, C4Hs, can undergo a...Ch. 9 - Prob. 117IECh. 9 - Use average bond enthalpies (Table 8.3 ) to...Ch. 9 - Prob. 119IECh. 9 - Prob. 120IECh. 9 - Prob. 121IECh. 9 - Prob. 122IE
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