1. The neutralization reaction that occurs between baking soda (sodium bicarbonate) and vinegar (acetic acid) is often used for making homemade volcanoes because the products are water, carbon dioxide (gas), and sodium acetate. If this reaction is performed in a flask with a balloon placed over the top, the balloon will inflate with CO2 gas. For this reaction, the system, determine the signs of q, w, and AU. w = AU = Calculate the work done (in Joules) if the gas expands against a vacuum. Calculate the work done (in Joules) if the gas expands against a constant pressure of 3.5 atm.
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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