2. Today we will try to answer the question "Can we model what is happening when particles are rearranging to help us explain the changes we are seeing in energy?" How might this help us figure out why hydrogen has such a high energy output compared to gasoline?
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.
H2 gas is highly combustible in nature. And has high energy even then the gasoline.
Now if we see what actually happens at the molecular level is.
H2(g) + 1/2O2(g) ====> H2O + Heat
Now if we see here this heat is too large. Since hydrogen is small having 1 electron in it. Which it wants to share. And the basis of combustible is itself electron donation tendency
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