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Title: Thermochemistry
Description: These comprehensive notes cover the fundamental principles of thermochemistry, including the definitions and units of thermodynamic quantities, the laws of thermodynamics, and the application of thermochemistry to chemical reactions and processes. Topics include calorimetry, enthalpy, entropy, and free energy, as well as the use of thermochemical data to predict the feasibility and direction of chemical reactions. The notes also include numerous examples and practice problems to help solidify understanding of the concepts. Ideal for students studying chemistry or related fields, or for anyone looking to deepen their understanding of thermochemistry.
Description: These comprehensive notes cover the fundamental principles of thermochemistry, including the definitions and units of thermodynamic quantities, the laws of thermodynamics, and the application of thermochemistry to chemical reactions and processes. Topics include calorimetry, enthalpy, entropy, and free energy, as well as the use of thermochemical data to predict the feasibility and direction of chemical reactions. The notes also include numerous examples and practice problems to help solidify understanding of the concepts. Ideal for students studying chemistry or related fields, or for anyone looking to deepen their understanding of thermochemistry.
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MODULE 4
ENG 201
ENERGY
TRANSFORMATIONS
IN MATTER
4
...
1 THERMOCHEMISTRY
DEPARTMENT OF CHEMICAL ENGINEERING
UNIVERSITY OF SANTO TOMAS
MANILA, PHILIPPINES
This PowerPoint presentation is developed based from
the following references:
▪ Masterton, W
...
, & Hurley, C
...
(2018)
...
C & E
Publishing Inc
...
, Goldsby K (2017)
...
New york: McGrawHill
...
S
...
Principles of general chemistry
...
▪
Jespersen, N
...
, Brady, J
...
, & Hyslop, A
...
Study
guide Chemistry: the molecular nature of matter
...
10/11/2022
2
INTENDED LEARNING OUTCOMES
➢Define thermodynamics and thermochemistry
➢Discuss the difference between system and
surroundings, types of system, state and path
functions, exothermic and endothermic processes,
energy in transit and stored energy, latent heat and
sensible heat, and various forms of energy
...
THERMOCHEMISTRY
is the study of heat change in chemical reactions
...
EP = mgh
where:
EP = potential energy
m = mass
g = gravitational field strength
h = vertical height
• Kinetic Energy is the energy due to the motion of an object
...
184 J
• Calorie (Cal)
1 Cal = 1000 cal = 1kcal
• British Thermal Unit (BTU)
1 BTU = 1055 J
10/11/2022
7
HEAT, SYSTEM, AND SURROUNDINGS
HEAT is the transfer of thermal energy between two bodies that are at
different temperatures
...
SURROUNDINGS is the
rest of the universe
...
These depend
only on the initial and final states of the system and not on how the
change is accomplished
...
e
...
(i
...
work, heat)
The gain in gravitational potential energy that occurs
when a person climbs from the base to the top of a
mountain is independent of the path taken
...
They are not thermodynamic
properties; they are the forms that
energy takes to cross the system
boundary
...
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12
ENDOTHERMIC AND
EXOTHERMIC PROCESSES
An exothermic process is any
process that gives off heat or
transfers thermal energy to
the surroundings
...
The system is underlined in
each example
...
Endo b) The ice gets warmer when you touch it
...
Exo d) Water vapor condenses on a cold pipe
...
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15
LATENT HEAT AND SENSIBLE HEAT
LATENT HEAT
- energy that is absorbed or released during a
phase change
...
10/11/2022
16
LATENT HEAT AND SENSIBLE HEAT
10/11/2022
17
THINK!
Relate Polar ice caps to Energy
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18
THANK YOU!
10/11/2022
19
Title: Thermochemistry
Description: These comprehensive notes cover the fundamental principles of thermochemistry, including the definitions and units of thermodynamic quantities, the laws of thermodynamics, and the application of thermochemistry to chemical reactions and processes. Topics include calorimetry, enthalpy, entropy, and free energy, as well as the use of thermochemical data to predict the feasibility and direction of chemical reactions. The notes also include numerous examples and practice problems to help solidify understanding of the concepts. Ideal for students studying chemistry or related fields, or for anyone looking to deepen their understanding of thermochemistry.
Description: These comprehensive notes cover the fundamental principles of thermochemistry, including the definitions and units of thermodynamic quantities, the laws of thermodynamics, and the application of thermochemistry to chemical reactions and processes. Topics include calorimetry, enthalpy, entropy, and free energy, as well as the use of thermochemical data to predict the feasibility and direction of chemical reactions. The notes also include numerous examples and practice problems to help solidify understanding of the concepts. Ideal for students studying chemistry or related fields, or for anyone looking to deepen their understanding of thermochemistry.