A 500 megawatt electrical power plant typically burned 1,430,000 tonne of coal in a year. (a) Assuming that the coal was 80% carbon and 3% sulfur and that combustion was complete, calculate the number of tonne of carbon dioxide and sulfur dioxide produced by the plant during the year. (b) If 50% of the SO2 could be removed by reac- tion with powdered CaO to form CaSO3, how many tonne of CaSO, would be produced?
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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