le Chatelier's Principle can be seen in natural systems and one of the more well known examples is the chemistry of carbon dioxide (CO2) in seawater. There are three main chemical equations involved for the reactions of CO2 in the ocean. The first is the air-to-sea equilibrium between CO2 in the atmosphere and CO2 dissolved in the ocean: (1) CO2(atm) <=> CO2(ocean) Once in the ocean, CO2 the reacts reversibly with a water molecule, H2O, to form a hydrogen ion, H+, and a bicarbonate ion, HCO3-: (2) CO2(ocean) + H2O <=> H+ + HCO3- Use le Chatelier's Principle and the two reactions above to explain why adding more CO2 to the atmosphere would increase H+ in the oceans. The increase in H+ is referred to as ocean acidification.
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.
le Chatelier's Principle can be seen in natural systems and one of the more well known examples is the chemistry of carbon dioxide (CO2) in seawater. There are three main chemical equations involved for the reactions of CO2 in the ocean. The first is the air-to-sea equilibrium between CO2 in the atmosphere and CO2 dissolved in the ocean:
(1) CO2(atm) <=> CO2(ocean)
Once in the ocean, CO2 the reacts reversibly with a water molecule, H2O, to form a hydrogen ion, H+, and a bicarbonate ion, HCO3-:
(2) CO2(ocean) + H2O <=> H+ + HCO3-
Use le Chatelier's Principle and the two reactions above to explain why adding more CO2 to the atmosphere would increase H+ in the oceans. The increase in H+ is referred to as ocean acidification.
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