Question 1 Methane CH4) can be captured from landfills and farms and burned as fuel. This process releases carbon dioxide C2). What effect is the widespread use of this prac- tice likely to have on global warming? It likely will help reduce global warming because using methane (CH4) as fuel does not produce any greenhouse gases. It likely will help reduce global warming because carbon dioxide (C2) is a less po- tent greenhouse gas than methane (CH4). It likely will contribute to global warming because it produces two greenhouse gases, not just one. It likely will contribute to global warming because carbon dioxide (C2) is a more potent greenhouse gas than methane (CH4).
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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