General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN: 9781305580343
Author: Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher: Cengage Learning
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Textbook Question
Chapter 10, Problem 10.54QP
a The molecule HN═NH exists as a transient species in certain reactions. Give the valence bond description of this species. b Hydrogen cyanide, HCN, is a very poisonous gas or liquid with the odor of bitter almonds. Give the valence bond description of HCN. (Carbon is the central atom.)
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10.) The structural formula of a certain aldehyde (related to formaldehyde) is H3C-CH2-CHO. Draw a Lewis structure for this aldehyde and determine the number of bonds present. Note that a single or a double or a triple bond counts as one bond.
Write the number, not the word.
In chemical reactions, heat is converted into chemical energy (the potential energy stored
in chemical bonds) or vice versa. Bond energy is the energy required to break one mole of
the bond in the gas phase. Since it takes energy to break a bond, bond energies are
always positive. Conversely, energy is released when bonds are formed. Thus, the
enthalpy change for a reaction can be approximated from
Part A
Calculate the bond energy per mole for breaking all the bonds in methane, CH4.
ΔΗ
Σ(ΔΗ breaking) + Σ(ΔΗ forming)
Express your answer to four significant figures and include the appropriate units.
where H represents bond energies for the breaking (positive bond energy) or forming
(negative bond energy) of a bond and Hrxn represents the overall enthalpy for the
• View Available Hint(s)
reaction.
Use the table to answer questions about bond energies.
HẢ
Bond energy
Bond
(kJ/mol )
Value
Units
AHCH, =
C-C
347
C=C
611
Submit
Сн
414
C-O
360
Part B
C=OinCO2
799
O-0
142
Calculate the bond…
A chemical reaction produces formaldehyde, with a chemical formula of CH2O. Carbon is in Group 4A, oxygen is in Group 6A, and hydrogen is in Group 1A on the periodic table. In one to two sentences, describe the bonds in a molecule of formaldehyde in terms of valence electrons.
Chapter 10 Solutions
General Chemistry - Standalone book (MindTap Course List)
Ch. 10.1 - An atom in a molecule is surrounded by four pairs...Ch. 10.1 - Use the VSEPR method to predict the geometry of...Ch. 10.1 - Prob. 10.2ECh. 10.2 - Bromine trifluoride, BrF3, has a nonzero dipole...Ch. 10.2 - Which of the following would be expected to have a...Ch. 10.2 - Two molecules, each with the general formula AX3,...Ch. 10.3 - Using hybrid orbitals, describe the bonding in NH3...Ch. 10.4 - Describe the bonding on the carbon atom in carbon...Ch. 10.4 - Dinitrogen difluoride (see Example 10.5) exists as...Ch. 10.4 - Prob. 10.3CC
Ch. 10.6 - The C2 molecule exists in the vapor phase over...Ch. 10.6 - Give the orbital diagram and electron...Ch. 10 - Describe the main features of the VSEPR model.Ch. 10 - According to the VSEPR model, what are the...Ch. 10 - Why is a lone pair expected to occupy an...Ch. 10 - Prob. 10.4QPCh. 10 - Explain why nitrogen trifluoride has a small...Ch. 10 - Prob. 10.6QPCh. 10 - What is the angle between two sp3 hybrid orbitals?Ch. 10 - Prob. 10.8QPCh. 10 - Prob. 10.9QPCh. 10 - How does the valence bond description of a...Ch. 10 - Prob. 10.11QPCh. 10 - What factors determine the strength of interaction...Ch. 10 - Prob. 10.13QPCh. 10 - Prob. 10.14QPCh. 10 - Prob. 10.15QPCh. 10 - Describe the bonding in O3, using molecular...Ch. 10 - Prob. 10.17QPCh. 10 - Which of the following molecular geometries does...Ch. 10 - Which of the following would be a polar molecule?...Ch. 10 - Prob. 10.20QPCh. 10 - Best Lewis Formula and Molecular Geometry A...Ch. 10 - Prob. 10.22QPCh. 10 - Prob. 10.23QPCh. 10 - Which of the following molecular models correctly...Ch. 10 - Prob. 10.25QPCh. 10 - Prob. 10.26QPCh. 10 - Indicate what hybrid orbital depicted below is...Ch. 10 - An atom in a molecule has two bonds to other atoms...Ch. 10 - Two compounds have the same molecular formula,...Ch. 10 - A neutral molecule is identified as a...Ch. 10 - Acetic acid, the sour constituent of vinegar, has...Ch. 10 - What are the bond angles predicted by the VSEPR...Ch. 10 - Predict the shape or geometry of the following...Ch. 10 - Use the electron-pair repulsion model to predict...Ch. 10 - Predict the geometry of the following ions, using...Ch. 10 - Use the VSEPR model to predict the geometry of the...Ch. 10 - For each of the following molecules, state the...Ch. 10 - For each of the following molecules, state the...Ch. 10 - Prob. 10.39QPCh. 10 - From the electron-pair repulsion model, predict...Ch. 10 - Predict the geometries of the following ions,...Ch. 10 - Name the geometries expected for the following...Ch. 10 - a The molecule AsF3 has a dipole moment of 2.59 D....Ch. 10 - a The molecule BrF3 has a dipole moment of 1.19 D....Ch. 10 - Which of the following molecules would be expected...Ch. 10 - Which of the following molecules would be expected...Ch. 10 - What hybrid orbitals would be expected for the...Ch. 10 - What hybrid orbitals would be expected for the...Ch. 10 - What hybrid orbitals would be expected for the...Ch. 10 - What hybrid orbitals would be expected for the...Ch. 10 - a Mercury(II) chloride dissolves in water to give...Ch. 10 - a Nitrogen trifluoride, NF3, is a relatively...Ch. 10 - a Carbonyl fluoride, COF2, is an extremely...Ch. 10 - a The molecule HNNH exists as a transient species...Ch. 10 - The hyponitrite ion, ONNO, exists in solid...Ch. 10 - Fumaric acid, C4H4O4, occurs in the metabolism of...Ch. 10 - Describe the electronic structure of each of the...Ch. 10 - Use molecular orbital theory to describe the...Ch. 10 - Prob. 10.59QPCh. 10 - Write the molecular orbital configuration of the...Ch. 10 - Predict the molecular geometry of the following: a...Ch. 10 - Prob. 10.62QPCh. 10 - Which of the following molecules or ions are...Ch. 10 - Which of the following molecules or ions are...Ch. 10 - Describe the hybrid orbitals used by each carbon...Ch. 10 - Prob. 10.66QPCh. 10 - Explain how the dipole moment could be used to...Ch. 10 - Two compounds have the formula Pt(NH3)2Cl2....Ch. 10 - Explain in terms of bonding theory why all four...Ch. 10 - Explain in terms of bonding theory why all atoms...Ch. 10 - What is the molecular orbital configuration of...Ch. 10 - Prob. 10.72QPCh. 10 - Calcium carbide, CaC2, consists of Ca2+ and C22...Ch. 10 - Sodium peroxide, Na2O2, consists of Na+ and O22...Ch. 10 - The oxygen oxygen bond in O2 is 112 pm and in O2...Ch. 10 - The nitrogennitrogen bond distance in N2 is 109...Ch. 10 - Using molecular orbital theory, determine the...Ch. 10 - The ionization energy of O2 is smaller than the...Ch. 10 - Prob. 10.79QPCh. 10 - Prob. 10.80QPCh. 10 - Prob. 10.81QPCh. 10 - Prob. 10.82QPCh. 10 - What is the biological importance of stratospheric...Ch. 10 - Prob. 10.84QPCh. 10 - Prob. 10.85QPCh. 10 - The bond length in C2 is 131 pm. Compare this with...Ch. 10 - Calcium carbide, CaC2, has an ionic structure with...Ch. 10 - Write Lewis formulas for the BF molecule (two with...Ch. 10 - Boron trifluoride, BF3, reacts with ammonia, NH3,...Ch. 10 - Prob. 10.90QPCh. 10 - Allene (1,2-propadicne), a gas, has the following...Ch. 10 - Prob. 10.92QPCh. 10 - The triiodide ion, I3, and the azide ion, N3, have...Ch. 10 - Hydrogen azide (also known as hydrazoic acid),...Ch. 10 - Prob. 10.95QPCh. 10 - A molecule XF6 (having no lone pairs) has a dipole...Ch. 10 - Describe the molecular orbital configurations of...Ch. 10 - Prob. 10.98QPCh. 10 - Three different compounds have the same molecular...Ch. 10 - Prob. 10.100QPCh. 10 - Prob. 10.101QPCh. 10 - Solid sulfur normally consists of crystals of S8...Ch. 10 - Prob. 10.103QPCh. 10 - Consider the bonding in nitrate ion, NO3. First...Ch. 10 - A molecular compound is composed of 52.5% Xe,...Ch. 10 - A molecular compound is composed of 58.8% Xe,...Ch. 10 - A compound of chlorine and fluorine. ClFn, reacts...Ch. 10 - Excess fluorine, F2(g), reacts at 150C with...Ch. 10 - Prob. 10.109QPCh. 10 - One resonance formula of benzene, C6H6, is What is...
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