d. If 2500. kJ of heat are released by the reaction, how grams of C12H26 must have consumed/used? been e. Anettel ritiw baloiposo apaprio ezoriq erit zitpriw Sbaggoso yinebbu2 21 91uazeią sitt nerw If this reaction were being used to generate heat, how many grams of C12H26 would have to be reacted to generate enough heat to raise the temperature of 250g of liquid water from 10°C to 85°C (remember that the Cp of water is 4.184J/g°C, and find the energy needed for this change first.)
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.
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