Chemistry & Chemical Reactivity
10th Edition
ISBN: 9781337399074
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Chapter 20, Problem 42PS
Interpretation Introduction
Interpretation: The Lewis electron dot structures for
Concept introduction:
Lewis dot structure: For a given molecule, the bonding concerning the atoms and also the lone pairs can be shown by the diagram.
In this structure a single bond is represented by one dot pair and double bond is represented by two dot pairs and so on.
VSEPR Theory [Valence Shell Electron Pair Repulsion Theory]:
Geometry of the molecules can be predicted using VSEPR Theory. It is based on the number of electron pairs around the central atom of the molecule. Depending upon the bond pairs and lone pairs, geometries can be classified as linear, bent, pyramidal, trigonal planar, tetrahedral, octahedral and so on.
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Use the indicated average bond enthalpies to estimate the change in enthalpy, ΔHo, for the reaction between methane and iodine to produce iodomethane and hydrogen iodide:
CH4(g) + I2(g) → CH3I(g) + HI(g) ΔHo = ?
It may be helpful to draw the Lewis electron dot structure for each reactant and product; all reactants and products have single bonds.
average bond enthalpies (kJ)
C - H 413 , C - I 240 , H - I 299 , I - I 151
Express your answer in units of kilojoules, but do not include the units on your submitted answer.
20
Chapter 20 Solutions
Chemistry & Chemical Reactivity
Ch. 20.7 - Prob. 1.1ACPCh. 20.7 - Prob. 1.2ACPCh. 20.7 - Prob. 1.3ACPCh. 20.7 - Prob. 1.4ACPCh. 20.7 - Prob. 1.5ACPCh. 20.7 - Assume that a sample of hard water contains 50....Ch. 20.7 - One way to remove the calcium carbonate residue in...Ch. 20 - Prob. 1PSCh. 20 - Prob. 2PSCh. 20 - In the discussion on the composition of air,...
Ch. 20 - Prob. 4PSCh. 20 - Prob. 5PSCh. 20 - Prob. 6PSCh. 20 - Prob. 7PSCh. 20 - Prob. 8PSCh. 20 - Prob. 11PSCh. 20 - Although there are a number of...Ch. 20 - Prob. 14PSCh. 20 - Prob. 15PSCh. 20 - Prob. 16PSCh. 20 - Which of the following is a renewable energy...Ch. 20 - Prob. 18PSCh. 20 - Prob. 19PSCh. 20 - Prob. 21PSCh. 20 - The enthalpy of combustion of isooctane (C8H18),...Ch. 20 - Energy consumption in the United States amounts to...Ch. 20 - Prob. 24PSCh. 20 - Prob. 25PSCh. 20 - Prob. 27PSCh. 20 - Prob. 30PSCh. 20 - In methane hydrate the methane molecule is trapped...Ch. 20 - Prob. 32PSCh. 20 - Prob. 33PSCh. 20 - Prob. 34PSCh. 20 - Prob. 35PSCh. 20 - Prob. 36PSCh. 20 - Prob. 37PSCh. 20 - Prob. 38PSCh. 20 - Dinitrogen monoxide, N2O (commonly called nitrous...Ch. 20 - Prob. 40PSCh. 20 - Prob. 41PSCh. 20 - Prob. 42PSCh. 20 - Prob. 43GQCh. 20 - Prob. 44GQCh. 20 - Prob. 45GQCh. 20 - Prob. 46GQCh. 20 - Prob. 47GQCh. 20 - Prob. 48GQCh. 20 - Prob. 49ILCh. 20 - Prob. 50ILCh. 20 - Define the terms renewable and nonrenewable as...Ch. 20 - Prob. 52SCQCh. 20 - Prob. 53SCQCh. 20 - Prob. 54SCQCh. 20 - Prob. 55SCQCh. 20 - What is the likelihood that hydrogen (H2) will...Ch. 20 - Prob. 57SCQCh. 20 - Which sulfur compounds are atmospheric pollutants?...
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