LAB EXPERIMENTS FOR CHEM >C<
7th Edition
ISBN: 9781323912027
Author: Brown
Publisher: PEARSON C
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Textbook Question
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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Students have asked these similar questions
Consider the reaction BF3 + NH3 -> F3B-NH3
(a) Describe the changes in hybridization of the B and N atoms as a result of this reaction.
(b) Describe the shapes of all the reactant molecules with their bond angles.
(c) Draw the overall shape of the product molecule and identify the bond angles around B and N atoms.
(d) What is the name of the bond between B and N.
(e)Describe the bonding orbitals that make the B and F, B and N & N and H bonds in the product molecule.
What is the bond angle between the 2px, 2py, and 2pz atomic orbitals? What would be the allowable bond angles be if 2p atomic orbitals were combined to make molecular orbitals?
Which one of the following statements is false?
Valence bond theory and molecular orbital theory can be described as two different views of the same thing.
When one considers the molecular orbitals resulting from the overlap of any two specific atomic orbitals, the bonding orbitals are always lower in energy than the antibonding orbitals.
Molecular orbitals are generally described as being more delocalized than hybridized atomic orbitals.
One of the shortcomings of molecular orbital theory is its inability to account for a triple bond in the nitrogen molecule, N2.
One of the shortcomings of valence bond theory is its inability to account for the paramagnetism of the oxygen molecule, O2.
Chapter 9 Solutions
LAB EXPERIMENTS FOR CHEM >C<
Ch. 9.2 - Consider the following AB3 molecules and ions-...Ch. 9.2 - Prob. 9.1.2PECh. 9.2 - Prob. 9.2.1PECh. 9.2 - Prob. 9.2.2PECh. 9.2 - Prob. 9.3.1PECh. 9.2 - Prob. 9.3.2PECh. 9.3 - Prob. 9.4.1PECh. 9.3 - Determine whether the following molecules are...Ch. 9.5 - Prob. 9.5.1PECh. 9.5 - Prob. 9.5.2PE
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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