Consider the following reaction: 2 AB + 3 CD2 → 2 AD3 + C3B2 Use the provided standard enthalpies of formation to calculate the standard enthalpy change (ΔH°rxn) for this reaction. Compound ΔH°f (kJ/mol) AB -639.8 CD2 +80.0 AD3 -606.9 C3B2 -603.0

Consider the following reaction: 2 AB + 3 CD2 → 2 AD3 + C3B2 Use the provided standard enthalpies of formation to calculate the standard enthalpy change (ΔH°rxn) for this reaction. Compound ΔH°f (kJ/mol) AB -639.8 CD2 +80.0 AD3 -606.9 C3B2 -603.0

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter9: Energy And Chemistry

Section: Chapter Questions

Problem 9.94PAE

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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.

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Please type all work and put answer in correct sig figs please!!!

Question 6

Consider the following reaction: 2 AB + 3 CD₂ → 2 AD₃ + C₃B₂

Use the provided standard enthalpies of formation to calculate the standard enthalpy change (ΔH^°rxn) for this reaction.

Compound	ΔH^°_f (kJ/mol)
AB	-639.8
CD₂	+80.0
AD₃	-606.9
C₃B₂	-603.0

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