Given: 2 Fe(s) + 3 0,(g) → 2 Fe,0,(s) AH°= -789 kJ The reaction shown above is and therefore heat is by the reaction. Select one: a. endothermic, lost b. endothermic, gained c. exothermic, gained d. exothermic, lost 22

Q: ch heat

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Q: Consider the following reaction: 4Fe(s) + 3 O₂(g) → 2Fe₂O3(s) AH = -826.0 kJ/mol a) Is the reaction…

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Q: Part N Which following statement(s) describes an endothermic reaction? 420 kJ of energy was consumed…

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Q: = -56.04 J/g. Based on this data, calculate 4. The freezing of benzene is exothermic with a AH, the…

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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.