MISSED THIS? Watch KCV: Determining the Enthalpy of Reaction from Standard Enthalpies of Formation, IWE: AH*rxn and the Standard Enthalpies of Formation: Read Section 7.9. You can click on the Review link to access the section in your e Text. Ethanol can be made from the fermentation of crops and has been used as a fuel additive to gasoline. Part A Enter a balanced equation for the combustion of ethanol. Express your answer as a chemical equation. Identify all of the phases in your answer Part B ΑΣΦ A chemical reaction does not occur for this question. ΔΗån = Request Answer ? Calculate AHin using values from Appendix IIB. Express your answer using five significant figures. IVE ΑΣΦ Request Answer www ? kJ
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Here we are required to find the enthalpy of the combustion reaction.
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