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.
![1.
Complete the following equations (assuming that the reactions occur via a bromonium ion). There
is no need to write the mechanism. If the reaction produces a pair of enantiomers, draw both
structures and assign the stereochemistry (R or S). If the reaction produces a meso compound,
you should assign its stereochemistry (R or S), but do not show its enantiomer, since it does not
represent a new compound. Clearly label any meso compounds.
Note that CH2CI2 is the solvent, not a reactant.
Br2
a)
CH,Cl,
Br2
(b)
CH,CI,
Brz
CH,CI,
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