Fifty grams of water at 36oC is heated with 5000 Joules of heat. What is the final temperature of water? The specific heat of water is 4.184 J/g•K. 60 deg C 30 deg C 90 deg C 0 deg C 2. When does “the measure of the disorder of a system” increase? Phase Change form solid to liquid to gas Temperature decrease When a substance is not broken into parts lesser product molecules than reactant molecules
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.
60 deg C
0 deg C
2. When does “the measure of the disorder of a system” increase?
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