Thermodynamic Properties: Why We Need Them & How to Calculate

[manimaran1605]

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?

 

[DrClaude]

It's hard to answer your questions because they are not very specific. What is it exactly you don't understand?

Why should we bother about Extensive properties in Thermodynamic systems?

Why not?

Why do we need specific value of some thermodynamic property?

Because they characterise the system?

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?

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?

 

[Zeppos10]

see: "Extensive Quantities in Thermodynamics" DOI= 10.1088/0143-0807/35/3/035017 (published in 2014)