Processes in Which One Intensive Variable is Constant

Here is our generic process path depicting a series of states the system passes through during a process.
When one intensive property remains constant during a process, it is often designated with an iso- prefix.
State 1
State2
This solid process patch shows the set of states that the system moves through as makes the transition from state 1 to state 2.
This lesson will explain the special simplifications of the First Law of Thermodynamics that are applicable to

Isobaric

and

Isochoric

processes.
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Ch 4, Lesson E, Page 1 - Processes in Which One Intensive Variable is Constant