Chemistry, Books a la Carte Plus Mastering Chemistry with eText -- Access Card Package (7th Edition)

7th Edition

ISBN: 9780133900811

Author: John E. McMurry, Robert C. Fay, Jill Kirsten Robinson

Publisher: PEARSON

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Textbook Question

Chapter 9, Problem 9.150MP

The reaction S 8 ( g ) → 4 S 2 ( g ) has Δ H ° = +237 kJ

(a) The S₈ molecule has eight sulfur atoms arranged in a ring. What is the hybridization and geometry around each sulfur atom in S₈?

(b) The average S-S bond dissociation energy is 225 kJ/mol. Using the value of Δ H ° given above, what is the S=S double bond energy in S₂(g)?

(c) Assuming that the bonding in S₂ is similar to the bonding in O₂, give a molecular orbital description of the bonding in S₂. Is S₂ likely to be paramagnetic or diamagnetic?

Formula Formula Bond dissociation energy (BDE) is the energy required to break a bond, making it an endothermic process. BDE is calculated for a particular bond and therefore consists of fragments such as radicals since it undergoes homolytic bond cleavage. For the homolysis of a X-Y molecule, the energy of bond dissociation is calculated as the difference in the total enthalpy of formation for the reactants and products. X-Y → X + Y BDE = Δ H f X + Δ H f Y – Δ H f X-Y where, ΔHf is the heat of formation.

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Chapter 9, Problem 9.149CP

Chapter 9, Problem 9.151MP

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Chapter 9 Solutions

Chemistry, Books a la Carte Plus Mastering Chemistry with eText -- Access Card Package (7th Edition)

Ch. 9 - Prob. 9.1P Ch. 9 - Conceptual APPLY 9.2 How much work is done in...Ch. 9 - PRACTICE 9.3 The reaction between hydrogen and...Ch. 9 - Conceptual APPLY 9.4 The following reaction has E...Ch. 9 - PRACTICE 9.5 Use the following t her mo chemical...Ch. 9 - APPLY 9.6 Approximately, 1.8106 kJ of energy is...Ch. 9 - PRACTICE 9.7 Indicate the direction of heat...Ch. 9 - APPLY 9.8 Instant hot packs and cold packs contain...Ch. 9 - PRACTICE 9.9 What is the specific heat of lead in...Ch. 9 - APPLY 9.10 Calculate the heat capacity (C) of a...

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