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.
![Indicate the temperature at which no more than 675 grams of KNO3 can be dissolved in 500 ml of
water. (T/I)
Solubility (g/L of solvent)
40 °C
70 °C
50 °C
80 °C
O 60 °C
1400
1300
1200
1100
1000-
900
800
700
600
500
400
300
200
100
0+
0
Solubility Curves
KI
-HCI
SO₂
NaNO3
-KNO3
NHẠC
KCI
-KCIO3
NaCl
NH3
10 20 30 40 50 60 70 80 90 100
Temperature (°C)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F07072c6e-4e33-4c40-b09c-59a13447e4dd%2Fab181a62-d907-45f7-a8a2-2ac1907bbae0%2F0z32tpn_processed.png&w=3840&q=75)
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