20 40 60 80 100 120 Temperature (°C) University of VWisconsin, https://wisc.pb.unizin.org/minimisgenchem/chapter/vapor-pressure- m10q3/ Reference the vapor pressure diagram above with the table below, which provides the chemical formulas for the four substances: Substance Name Chemical Formula Water H20 Ethyl ether (CH3CH2)20 Ethylene glycol (CH2OH)2 Ethyl alcohol CH3CH2OH In degrees C, what is the approximate boiling point of (CH3CH2)2O?
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.
![20
40
60
80
100
120
Temperature (°C)
University of Wisconsin,
https://wisc.pb.unizin.org/minimisgenchem/chapter/vapor-pressure-
m10q3/
Reference the vapor pressure diagram above
with the table below, which provides the
chemical formulas for the four substances:
Substance Name
Chemical Formula
Water
H20
Ethyl ether
(CH3CH2)20
Ethylene glycol
(CH2OH)2
Ethyl alcohol
CH3CH2OH
In degrees C, what is the approximate boiling
point of (CH3CH2)2O?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc6228032-bce6-46f9-b87a-648fe3727566%2F99a4f8f3-f7db-4b32-b43e-fbacd6101835%2Fij9eq1_processed.jpeg&w=3840&q=75)
![133 -
107
ethyl ether
ethyl alcohol
80
53
water
27
' ethylene glycol
20
40
60
80
100
120
Temperature (°C)
University of Wisconsin,
https://wisc.pb.unizin.org/minimisgenchem/chapter/vapor-pressure-
m10q3/
Reference the vapor pressure diagram above
with the table below, which provides the
chemical formulas for the four substances:
Substance Name
Chemical Formula
Water
H20
Ethyl ether
(CH3CH2)20
Ethylene glycol
(CH2OH)2
Pressure (kPa)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc6228032-bce6-46f9-b87a-648fe3727566%2F99a4f8f3-f7db-4b32-b43e-fbacd6101835%2Fm4rq15c_processed.jpeg&w=3840&q=75)
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