## Paths and Changes of State

isochoric/isometric: $\Delta V = 0$
isothermal: $\Delta T = 0$
isobaric: $\Delta P = 0$

Posts: 62
Joined: Thu Jul 27, 2017 3:01 am

### Paths and Changes of State

In this course, do we have to draw out the path of the state of change from one substance to another? And do we also have to describe, from the path that we drew, whether the process was reversible, irreversible, adiabatic, isobaric, isothermal..etc.?

To clarify, I have an example of a path down attached.
Attachments

Priyanka Bhakta 1L
Posts: 50
Joined: Fri Sep 29, 2017 7:04 am

### Re: Paths and Changes of State

Hi! So based on the topics covered in this unit's outline on Dr. Lavelle's website, we do not need to know how to draw out the path of change of state nor do we have to know how to describe the change of state. This is merely an educated guess, I would try asking a TA or Lavelle himself as we learn more in lecture and discussion.

RohanGupta1G
Posts: 34
Joined: Sat Jul 22, 2017 3:00 am

### Re: Paths and Changes of State

I don’t think we need to know what you drew however we need to know how to draw and interpret a phase change graph plotting energy and heat and you definetley should be able to determine whether this change is endothermic or exothermic.

Peter Dis1G
Posts: 97
Joined: Fri Sep 29, 2017 7:04 am

### Re: Paths and Changes of State

https://lavelle.chem.ucla.edu/wp-conten ... mistry.pdf
It doesn't say we have to draw, but to identify yes.