Principles of Chemistry: A Molecular Approach (3rd Edition)
Principles of Chemistry: A Molecular Approach (3rd Edition)
3rd Edition
ISBN: 9780321971944
Author: Nivaldo J. Tro
Publisher: PEARSON
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Chapter 9, Problem 68E
Interpretation Introduction

Interpretation:

The enthalpy of reaction using bond energy values is to be calculated.
The reason as to why the enthalpy of formation of HBr is not equal to one-half of the value calculated is to be accounted.

Concept introduction: Bond energy or bond enthalpy is the amount of energy required to break one mole of bonds. Breaking of bonds is an endothermic reaction because energy is always absorbed in the process and its value is always positive. Formation of bonds is an exothermic reaction because energy is always released in the process and its value is always negative.
The enthalpy of a reaction is calculated by the formula,

    ΔHrxn=(ΔH bondsbroken)+(ΔH bondsformed)

To determine: The enthalpy of reaction using bond energy values and the reason as to why the enthalpy of formation of HBr is not equal to one-half of the value calculated.

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Chapter 9 Solutions

Principles of Chemistry: A Molecular Approach (3rd Edition)

Ch. 9 - Prob. 9.9PCh. 9 - Write the Lewis structure for XeF4.Ch. 9 - Prob. 9.10MPCh. 9 - Prob. 9.11PCh. 9 - Prob. 9.11MPCh. 9 - Prob. 1SAQCh. 9 - Prob. 2SAQCh. 9 - Prob. 3SAQCh. 9 - Prob. 4SAQCh. 9 - Prob. 5SAQCh. 9 - Prob. 6SAQCh. 9 - Prob. 7SAQCh. 9 - Prob. 8SAQCh. 9 - Prob. 9SAQCh. 9 - Prob. 10SAQCh. 9 - Prob. 11SAQCh. 9 - Prob. 12SAQCh. 9 - Use formal charge to choose the best Lewis...Ch. 9 - Use bond energies to determine Hrxnfor this...Ch. 9 - Prob. 15SAQCh. 9 - Prob. 1ECh. 9 - Prob. 2ECh. 9 - Prob. 3ECh. 9 - Prob. 4ECh. 9 - Prob. 5ECh. 9 - Prob. 6ECh. 9 - Prob. 7ECh. 9 - Prob. 8ECh. 9 - Explain the trend in the lattice energies of the...Ch. 9 - Prob. 10ECh. 9 - The lattice enerqy of CsF is -744 kJ/mol, whereas...Ch. 9 - Prob. 12ECh. 9 - Prob. 13ECh. 9 - Prob. 14ECh. 9 - Prob. 15ECh. 9 - Prob. 16ECh. 9 - Prob. 17ECh. 9 - Prob. 18ECh. 9 - Draw the Lewis structure for CO with an arrow...Ch. 9 - Prob. 20ECh. 9 - Prob. 21ECh. 9 - Prob. 22ECh. 9 - Prob. 23ECh. 9 - 24. Write the Lewis structure that obeys the...Ch. 9 - Prob. 25ECh. 9 - Use formal charge to determine which of the two...Ch. 9 - Prob. 27ECh. 9 - Prob. 28ECh. 9 - Prob. 29ECh. 9 - Prob. 30ECh. 9 - Prob. 31ECh. 9 - What are the formal charges of the atoms shown in...Ch. 9 - Write the Lewis structure for each molecule. a....Ch. 9 - Prob. 34ECh. 9 - Prob. 35ECh. 9 - Prob. 36ECh. 9 - Prob. 37ECh. 9 - Prob. 38ECh. 9 - Consider these three compounds: HCCH, H2CCH2...Ch. 9 - Prob. 40ECh. 9 - Prob. 41ECh. 9 - Prob. 42ECh. 9 - Prob. 43ECh. 9 - Prob. 44ECh. 9 - Prob. 45ECh. 9 - Prob. 46ECh. 9 - Prob. 47ECh. 9 - Amino acids are the building blocks of proteins....Ch. 9 - Prob. 49ECh. 9 - Prob. 50ECh. 9 - Prob. 51ECh. 9 - Prob. 52ECh. 9 - Prob. 53ECh. 9 - Prob. 54ECh. 9 - Prob. 55ECh. 9 - Prob. 56ECh. 9 - Prob. 57ECh. 9 - Prob. 58ECh. 9 - Prob. 59ECh. 9 - Prob. 60ECh. 9 - Prob. 61ECh. 9 - Prob. 62ECh. 9 - Prob. 63ECh. 9 - Calculate Hrxn for the combustion of octane...Ch. 9 - 65. Draw the Lewis structure for each compound. a....Ch. 9 - Prob. 66ECh. 9 - Prob. 67ECh. 9 - Prob. 68ECh. 9 - Prob. 69ECh. 9 - Prob. 70ECh. 9 - Prob. 71ECh. 9 - Prob. 72ECh. 9 - Prob. 73ECh. 9 - Prob. 74ECh. 9 - Prob. 75ECh. 9 - Prob. 76ECh. 9 - Prob. 77ECh. 9 - Prob. 78ECh. 9 - Prob. 79ECh. 9 - Prob. 80ECh. 9 - Prob. 81ECh. 9 - Prob. 82ECh. 9 - Prob. 83E
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