Thermodynamics Exam II
Latest 2024/2025 With
Verified Question and
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Define State Principle - ANSWER-Number of independent
properties needed to fix the state of a system
Give Examples of Simple Compressible Systems -
ANSWER-water or uniform mixture of non-reacting gases
(air)
Define a Pure Substance - ANSWER-One that is uniform
and invariable in chemical composition. It can exist in
,more than one phase, but its chemical composition must
be the same in each phase.
In single phase regions the state is fixed by how many
properties - ANSWER-2 of the following: pressure,
specific volume, and temperature.
Two-phase regions - ANSWER-where two phases exist in
equilibrium: liquid-vapor, solid-liquid, and solid-vapor
Name the three changes in phase - ANSWER-
vaporization/condensation, melting/solidifying, and
sublimation
The triple line is - ANSWER-where the three phases can
exist in equilibrium
The vapor dome is - ANSWER-the dome shaped region
composed of the two-phase liquid-vapor states.
, What is a saturation state? - ANSWER-A state at which a
phase change either begins or ends.
What is in Table A-4? - ANSWER-Superheated vapors
What is in Table A-5? - ANSWER-Compressed liquids.
True or false; p and T are independent - ANSWER-False
True or false; when going through phase change both
temperature and pressure are constant - ANSWER-True
In what direction do isotherms go? - ANSWER-Right to
Left
In what direction do isobars go? - ANSWER-Left to Right
What is the critical point? - ANSWER-The point at the top
of the vapor dome where the saturated liquid and
saturated vapor lines meet.
Latest 2024/2025 With
Verified Question and
Answers Graded A+
Define State Principle - ANSWER-Number of independent
properties needed to fix the state of a system
Give Examples of Simple Compressible Systems -
ANSWER-water or uniform mixture of non-reacting gases
(air)
Define a Pure Substance - ANSWER-One that is uniform
and invariable in chemical composition. It can exist in
,more than one phase, but its chemical composition must
be the same in each phase.
In single phase regions the state is fixed by how many
properties - ANSWER-2 of the following: pressure,
specific volume, and temperature.
Two-phase regions - ANSWER-where two phases exist in
equilibrium: liquid-vapor, solid-liquid, and solid-vapor
Name the three changes in phase - ANSWER-
vaporization/condensation, melting/solidifying, and
sublimation
The triple line is - ANSWER-where the three phases can
exist in equilibrium
The vapor dome is - ANSWER-the dome shaped region
composed of the two-phase liquid-vapor states.
, What is a saturation state? - ANSWER-A state at which a
phase change either begins or ends.
What is in Table A-4? - ANSWER-Superheated vapors
What is in Table A-5? - ANSWER-Compressed liquids.
True or false; p and T are independent - ANSWER-False
True or false; when going through phase change both
temperature and pressure are constant - ANSWER-True
In what direction do isotherms go? - ANSWER-Right to
Left
In what direction do isobars go? - ANSWER-Left to Right
What is the critical point? - ANSWER-The point at the top
of the vapor dome where the saturated liquid and
saturated vapor lines meet.
