Propanal are isomers with the formula C 3 H 6 O. The heat of combustion of propanal

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Propanal

(CH,CH,CH) and acetone (CH,CCH,)


are isomers with the formula C3H6O. The heat of combustion of propanal is - 434.1 kcal mol-1, that of acetone -427.9 kcal mol-1.

(a) Write a balanced equation for the combustion of either compound.

(b) What is the energy difference between propanal and acetone? Which has the lower energy content?

(c) Which substance is more thermodynamically stable, propanal or acetone?

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Organic Chemistry structure and function

ISBN: 978-1429204941

6th edition

Authors: K. Peter C. Vollhardt, Neil E. Schore

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