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.
Explain Conjugated Systems ?
To explain the conjugated systems.
In a compound, the conjugated system is a system of more than one connected p orbitals as shown below by 1,3-butadiene.
There are many ways by which a conjugated system can form, but the most common is the alternate arrangement of the single and multiple bonds as shown in the 1,3-butadiene.
Here in 1,3-butadiene, every carbon atom has one p orbital which then overlaps each other and hence results in the spread of the p cloud from a single atom to the whole of the molecule which makes the electron delocalized.
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