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.
![32. It would be very useful if we could use the inexpensive carbon in coal to make more complex organic molecules such
gaseous or liquid fuels. The formation of methane from coal and water is reactant-favored and thus cannot occur
there is some energy transfer from outside. This problem examines the feasibility of other reactions using coal and
water.
a) Write three balanced equations for the reactions of coal (carbon) and steam to make ethane gas, C,H,(g), propase
gas, C,H,(g), and liquid methanol, CH,OH(C), with carbon dioxide as a by-product.
b) Using the data in Appendix B, calculate AH, AS", and AG° for each reaction, and then comment on whether any f
them would be a feasible way to make the stated products.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff62f25e2-af5b-4eca-b42b-d3601e09da0f%2Ff9032a5d-93e4-4c7c-b230-3fe1d760a76f%2Fqhaxyd9_processed.jpeg&w=3840&q=75)
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