State functions in thermodynamics

Click For Summary
SUMMARY

Internal energy (ΔU or ΔE), enthalpy (ΔH), and entropy (ΔS) are classified as state functions in thermodynamics. While the changes in these quantities depend on the initial and final states of a system, they do not rely on the specific path taken to transition between these states. This distinction is crucial for understanding thermodynamic processes and the behavior of systems in various states.

PREREQUISITES
  • Understanding of thermodynamic principles
  • Familiarity with state functions and their properties
  • Knowledge of the first and second laws of thermodynamics
  • Basic mathematical skills for calculating changes in thermodynamic properties
NEXT STEPS
  • Study the implications of the first law of thermodynamics on internal energy
  • Explore the concept of path functions versus state functions in thermodynamics
  • Learn about the applications of enthalpy in chemical reactions
  • Investigate the role of entropy in determining the spontaneity of processes
USEFUL FOR

Students and professionals in physics, chemistry, and engineering fields who are studying thermodynamics and seeking to deepen their understanding of state functions and their applications in various processes.

paragchitnis
Messages
25
Reaction score
0
The terms internal energy, enthalpy, entropy are state functions. Are change in internal energy([itex]\Delta[/itex]U or [itex]\Delta[/itex]E),change in enthalpy([itex]\Delta[/itex]H) and change in entropy([itex]\Delta[/itex]S) state functions?
 
Science news on Phys.org
paragchitnis said:
The terms internal energy, enthalpy, entropy are state functions. Are change in internal energy([itex]\Delta[/itex]U or [itex]\Delta[/itex]E),change in enthalpy([itex]\Delta[/itex]H) and change in entropy([itex]\Delta[/itex]S) state functions?

No, because they depend not only on the current state but also on a previous state. However, it is true that these functions do not depend on the path taken between the two states.
 

Similar threads

Undergrad Identification of changes in internal energy with work (in Callen's Thermodynamics)
  • · Replies 5 ·
Replies
5
Views
1K
Graduate Partial derivatives of thermodynamic state functions
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Enthalpy change in a flow process
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Thermodynamic functions and state variables
  • · Replies 8 ·
Replies
8
Views
2K
Undergrad A paradox about energy balance and steady state
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Change of Variables in Thermodynamics
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Difference calculating enthalpy change by using thermodynamic table A-17 vs. A-2 with integration
  • · Replies 1 ·
Replies
1
Views
963
Graduate Thermodynamic Axioms: Establishing Temperature, Internal Energy & Entropy
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Problem regarding understanding entropy
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Understand the Thermodynamic Identity: Is This Correct?
  • · Replies 3 ·
Replies
3
Views
2K