Explanation a. Enthalpy of reaction can be calculated by subtracting the enthalpy of formation of reactant from enthalpy of product by multiplying with their respective coefficient. In the combustion of glucose. C 6 H 6 → 6 C+3 H 2 The enthalpy of formation of benzene is ΔH f = −82.9 kj/mol The enthalpy of formation of carbon is ΔH f = −718.4 kj/mol The enthalpy of formation of hydrogen is ΔH f = −217.94 kj/mol So, enthalpy of reaction is =6 ΔH v + 3 ΔH H − ΔH benzene =6(−718.4) + 3(−217.94) − (−82.9) =−5535.21 Kj/mol b. There is a large change in value of enthalpy of formation of benzene (−82.9) to that of enthalpy of reaction of benzene which is −5535 approx...

Chemistry: Structure and Properties (2nd Edition)

2nd Edition

ISBN: 9780134293936

Author: Nivaldo J. Tro

Publisher: PEARSON

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Chapter 9, Problem 130E

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Interpretation:

‘By comparing bond energies with enthalpy of formation, Enthalpy of formation of benzene’ should be identified.

Concept introduction:

Enthalpy of reaction can be calculated by subtracting the enthalpy of formation of product from enthalpy of formation of reactant.

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Chapter 9, Problem 129E

Chapter 9, Problem 131E

Chapter 9 Solutions

Chemistry: Structure and Properties (2nd Edition)

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Instead of...Ch. 9 - A 25.5-g aluminum block is warmed to 65.4 °C and...Ch. 9 - We mix 50.0 mL of ethanol (density = 0.789 g/mL)...Ch. 9 - Prob. 105E Ch. 9 - Prob. 106E Ch. 9 - One tablespoon of peanut butter has a mass of 16...Ch. 9 - Prob. 108E Ch. 9 - Prob. 109E Ch. 9 - When we burn 10.00 g of phosphorus in O2 (g) to...Ch. 9 - The H for the oxidation of S in the gas phase to...Ch. 9 - The Hfo of TiI3(s) is -328 kJ/mol; and the Ho for...Ch. 9 - A copper cube measuring 1.55 cm on edge and an...Ch. 9 - A pure gold ring and pure silver ring have a total...Ch. 9 - The reaction of Fe2O3(s) with Al(s) to form...Ch. 9 - Prob. 116E Ch. 9 - Prob. 117E Ch. 9 - Prob. 118E Ch. 9 - Prob. 119E Ch. 9 - Calculate the heat of atomization (see previous...Ch. 9 - Prob. 121E Ch. 9 - Prob. 122E Ch. 9 - Prob. 123E Ch. 9 - Prob. 124E Ch. 9 - Prob. 125E Ch. 9 - Find H, E, q, and w for the freezing of water at...Ch. 9 - The heat of vaporization of water at 373 K is 40.7...Ch. 9 - Prob. 128E Ch. 9 - Prob. 129E Ch. 9 - Prob. 130E Ch. 9 - Prob. 131E Ch. 9 - Prob. 132E Ch. 9 - Prob. 133E Ch. 9 - Which expression describes the heat emitted in a...Ch. 9 - Prob. 135E Ch. 9 - Prob. 136E Ch. 9 - Prob. 137E Ch. 9 - Prob. 138E Ch. 9 - Prob. 139E Ch. 9 - Which statement is true of a reaction in which V...Ch. 9 - Which statement is true of an endothermic...Ch. 9 - When a firecracker explodes, energy is obviously...Ch. 9 - Prob. 143E Ch. 9 - Classify each process as endothermic or...Ch. 9 - A propane tank on a home barbeque contains 10.4 x...Ch. 9 - Prob. 146E Ch. 9 - Consider the decomposition of liquid hydrogen...Ch. 9 - Prob. 148E Ch. 9 - A chemical system produces 155 kJ of heat and does...Ch. 9 - Which sample is most likely to undergo the...Ch. 9 - Prob. 3SAQ Ch. 9 - A 12.5-g sample of granite initially at 82.0 C is...Ch. 9 - A cylinder with a moving piston expands from an...Ch. 9 - When a 3.80-g sample of liquid octane (C8H18)...Ch. 9 - Hydrogen gas reacts with oxygen to form water....Ch. 9 - Manganese reacts with hydrochloric acid to produce...Ch. 9 - Consider the reactions: A2BH1A3CH2 What is H for...Ch. 9 - Use standard enthalpies of formation to determine...Ch. 9 - Prob. 11SAQ Ch. 9 - Prob. 12SAQ Ch. 9 - Prob. 13SAQ Ch. 9 - Which set of compounds is arranged in order of...Ch. 9 - Prob. 15SAQ

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‘By comparing bond energies with enthalpy of formation, Enthalpy of formation of benzene’ should be identified. Concept introduction: Enthalpy of reaction can be calculated by subtracting the enthalpy of formation of product from enthalpy of formation of reactant.

Solution Summary: The author explains that enthalpy of formation of benzene can be calculated by comparing bond energies.

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Interpretation: ‘By comparing bond energies with enthalpy of formation, Enthalpy of formation of benzene’ should be identified. Concept introduction: Enthalpy of reaction can be calculated by subtracting the enthalpy of formation of product from enthalpy of formation of reactant.

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Chapter 9 Solutions

Interpretation:

‘By comparing bond energies with enthalpy of formation, Enthalpy of formation of benzene’ should be identified.

Concept introduction:

Enthalpy of reaction can be calculated by subtracting the enthalpy of formation of product from enthalpy of formation of reactant.