How much heat energy was lost by the liquid ethanol? How much heat energy was gained by the solid ethanol "cube" What is the heat of fusion of ethanol per gram?
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.
How much heat energy was lost by the liquid ethanol?
How much heat energy was gained by the solid ethanol "cube"
What is the heat of fusion of ethanol per gram?
![3. A student performed an experiment similar to the one you did in Part B. except used liquid and frozen
ethanol instead of water. The goal of the experiment was to determine the heat of fusion of ethanol.
The student measured the following data and the known value of the specific heat of liquid ethanol is
0.502 In this experiment, the liquid ethanol transfers heat energy to the solid ethanol to melt it
Experimental Data
mass solid ethanol
25.20 g
mass liquid ethanol in calorimeter
100.00 g
initial temperature of liquid ethanol in calorimeter
-100.0 °C
final temperature of liquid ethanol in calorimeter
initial temperature of solid ethanol
-112.5 °C
-114.0 °C
Use the table below to organize the information for the liquid ethanol.
Liquid Ethanol
mig eitane
Tiig enere =
Trig ethanei =
ATenen
SH, ethansi =
9o ethana
How much heat energy was lost by the liquid ethanol? (Show all equations and work with units)
How much heat energy was gained by the solid ethanol "cube"?
What is the heat of fusion of ethanol in cal per gram?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1fc4f2c0-f84e-4ece-a148-1536f6c8f57d%2F4ac4d29e-3463-4e86-a361-22d19c6b5eae%2F8uwizx_processed.png&w=3840&q=75)
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