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.
Which of the following statements about bomb calorimetry is true?
The operation of a bomb calorimeter is the same as that of a regular calorimeter.
The typical reactions performed in bomb calorimeters usually result in small amounts of heat and gaseous products.
Bomb calorimeters require calibration to ensure accurate results.
If the amount of heat produced by a reaction in a bomb calorimeter will be too large, then a regular calorimeter like a Styrofoam cup should be used.
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