Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Textbook Question
Chapter 9, Problem 5ALQ
Draw the Lewis structure for HCN. Indicate the hybrid orbitals, and draw a picture showing all the bonds between the atoms, labeling each bond as σ or π.
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9) HCCCO₂H, is an organic hydrocarbon.
a) Draw a geometrically accurate structure so that the formal charge of each
atom is zero identifying the bond angles (Draw it BIG!).
b) Identify the hybridization about each atom (not H) forming a bond
c) How many o or π bonds are there in this molecule
d) The combustion of the hydrocarbon produces carbon dioxide and water in
the gaseous state. Use average bond enthalpies to determine enthalpy of
reaction
What are the angles a and b in the actual molecule of which this is a Lewis structure?
H H H
a
HL
C H
H
H
Note for advanced students: give the ideal angles, and don't worry about small differences from the ideal that might be
caused by the fact that different electron groups may have slightly different sizes.
= []
b = ⁰
a =
X
Which statement best captures the fundamental idea behind VSEPR theory? Explain what is wrong with the statements you do not choose.
a. The angle between two or more bonds is determined primarily by the repulsions between the electrons within those bonds and other (lone pair) electrons on the central atom of a molecule. Each of these electron groups (bonding electrons or lone pair electrons) lowers its potential energy by maximizing its separation from other electron groups, thus determining the geometry of the molecule.
b. The angle between two or more bonds is determined primarily by the repulsions between the electrons within those bonds. Each of these bonding electrons lowers its potential energy by maximizing its separation from other electron groups, thus determining the geometry of the molecule.
c. The geometry of a molecule is determined by the shapes of the overlapping orbitals that form the chemical bonds. Therefore, to determine the geometry of a molecule, you must determine…
Chapter 9 Solutions
Chemistry
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