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 Custom Edition for Rutgers University General Chemistry

15th Edition

ISBN: 9781269935678

Author: Nivaldo J. Tro

Publisher: Pearson Education

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Chapter 10, Problem 130E

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

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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 10, Problem 129E

Chapter 10, Problem 131E

Chapter 10 Solutions

Chemistry: Structure and Properties Custom Edition for Rutgers University General Chemistry

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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 10 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.