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Resonance Energy of an Arene Hydrocarbon From Heat of Combustion Measurements

Resonance Energy of an Arene Hydrocarbon From Heat of Combustion Measurements

Vladimir L Kolesnichenko

J Chem Educ. 2015 Dec 8;92(12):2170-2172.

PMID: 26997668

Abstract:

A simple experimental method for determination of the resonance energy by measuring the energies of combustion for two isomeric compounds, aromatic 1-tert-butyl-3,5-dimethylbenzene and nonaromatic trans,trans,cis-1,5,9-cyclododecatriene is proposed. Both compounds not only have the same molecular formula, but also contain the same number of sp2 and sp3 carbon atoms. After converting the obtained values into the gas phase heats of combustion and subtracting one value from another, the resulting mean resonance energy of 184 kJ/mol was obtained. The proposed method can be offered as an experiment for an undergraduate physical chemistry lab curriculum.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AS2121228	Heat of Combustion			Price

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