Thermodynamic Properties: Why We Need Them & How to Calculate

  • Context: Graduate 
  • Thread starter Thread starter manimaran1605
  • Start date Start date
  • Tags Tags
    Properties
Click For Summary
SUMMARY

This discussion focuses on the importance of extensive and intensive properties in thermodynamics, specifically addressing why specific values of thermodynamic properties, such as specific heat capacity, are essential for characterizing systems. The conversation highlights that understanding these properties is crucial for calculating energy requirements, exemplified by the need to know the heat capacity to determine the energy needed to heat water. Additionally, it clarifies that density is an intensive property, remaining constant regardless of the mass of the substance, as illustrated by comparing two water samples at standard ambient temperature and pressure (SATP).

PREREQUISITES
  • Understanding of extensive and intensive properties in thermodynamics
  • Familiarity with specific heat capacity calculations
  • Knowledge of standard ambient temperature and pressure (SATP)
  • Basic principles of energy transfer in thermodynamic systems
NEXT STEPS
  • Research the calculation methods for specific heat capacity in various substances
  • Explore the concept of extensive and intensive properties in more detail
  • Learn about the implications of thermodynamic properties in real-world applications
  • Investigate the significance of density in different states of matter
USEFUL FOR

Students and professionals in the fields of physics, chemistry, and engineering, particularly those focusing on thermodynamics and energy systems.

manimaran1605
Messages
60
Reaction score
0
Why should we bother about Extensive properties in Thermodynamic systems? and
Why do we need specific value of some thermodynamic property? and
what does it tell us about the system? Eg. specific heat capacity?
How density of a thermodynamic system is a intensive property?
 
Science news on Phys.org
It's hard to answer your questions because they are not very specific. What is it exactly you don't understand?

manimaran1605 said:
Why should we bother about Extensive properties in Thermodynamic systems?
Why not?

manimaran1605 said:
Why do we need specific value of some thermodynamic property?
Because they characterise the system?

manimaran1605 said:
what does it tell us about the system? Eg. specific heat capacity?
For instance, how can you calculate how much energy is needed to heat one kg of water from 20°C to 30°C if you don't know its heat capacity?

manimaran1605 said:
How density of a thermodynamic system is a intensive property?
Take two systems, one being 1 kg of water at SATP, the other 2 kg of water at SATP. Is the density different?
 
  • Like
Likes   Reactions: 1 person
see: "Extensive Quantities in Thermodynamics" DOI= 10.1088/0143-0807/35/3/035017 (published in 2014)
 

Similar threads

Replies
2
Views
3K
  • · Replies 7 ·
Replies
7
Views
3K
Replies
5
Views
856
  • · Replies 12 ·
Replies
12
Views
3K
  • · Replies 8 ·
Replies
8
Views
1K
  • · Replies 75 ·
3
Replies
75
Views
5K
  • · Replies 15 ·
Replies
15
Views
3K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 15 ·
Replies
15
Views
3K