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.
![2. Why does grapefruit juice left in an open can taste metallic?
3. If nerves respond to electrical currents, why do you think putting aluminum foil
on an amalgam (gray) filled tooth hurts? Dental amalgam is a mixture of Ag,
Sn, and Hg.
4. Why do they put magnesium rods in a steel hot water heater? (Hint: Think
about galvanized steel.)
5. If pipes feeding a water fountain were made of copper with lead solder at
the junctions, which metal dissolves more readily? Explain.
6. Tarnished silver can be restored by contact with magnesium in a salt solution.
In this reaction, the tarnished silver is reduced. What is oxidized?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa509dc7e-2b9c-4da6-8ae4-4b57419bf223%2Fee45e4fa-a294-4840-a918-848808afd3ff%2Fipu40bq_processed.jpeg&w=3840&q=75)
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