Where Can I Find Reliable Thermodynamic Properties of Common Substances?

  • Thread starter Thread starter dRic2
  • Start date Start date
  • Tags Tags
    Properties
Click For Summary

Discussion Overview

The discussion revolves around finding reliable sources for thermodynamic properties of common substances, focusing on data such as enthalpy of formation, specific heat, and other thermophysical properties. Participants share various online resources and express their preferences for data presentation.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant expresses a need for reliable thermodynamic data for common substances and mentions challenges with existing resources like databooks and Wikipedia.
  • Another participant suggests the NIST online database as a useful resource for thermodynamic properties.
  • A participant confirms the usefulness of the NIST database and mentions a preference for a non-interactive display option.
  • Additional resources are shared, including a link for thermophysical properties of air and ethylene glycol, although it is noted that this site may not provide as comprehensive information as NIST.
  • Participants discuss the ease of finding specific thermodynamic gas properties using the NIST database.
  • Another resource for thermophysical fluid properties is mentioned, which is also considered helpful by participants.

Areas of Agreement / Disagreement

Participants generally agree on the usefulness of the NIST database and other suggested resources, but there are varying preferences regarding the presentation of data and the comprehensiveness of different sources.

Contextual Notes

Some participants express concerns about the reliability of certain sources like Wikipedia, highlighting the importance of specified conditions for the data provided. There is also mention of limitations in the amount of information available from alternative resources compared to NIST.

Who May Find This Useful

This discussion may be useful for students and professionals in thermodynamics, particularly those seeking reliable data for homework, research, or practical applications involving thermodynamic properties of substances.

dRic2
Hi, I'm pretty good in basic thermodynamics so I know how to make simple predictions of properties of substances like( h, g, cp, ecc...) but I always need some value to start with (e.g. entalpy of formation at 298K, perfect gas). I was wondering if there is a website with this kind of data for the most common substances. I tried using databook (like Perry) but since I mainly use to check homeworks' result I ended up loosing much more time looking for that values rather than finish the exercise. I don't trust wikipedia either because it's never specified the conditions under which the values were estimated.
 
Chemistry news on Phys.org
Hello,

Have you ever tried NIST online database?
 
  • Like
Likes   Reactions: berkeman and dRic2
Mindblowing! That's exactly what I was looking for, thank you.
 
You are welcome!

Indeed, it is very useful, but I like it without the interactive display (you can untick the respective box and get table instead of graph).

In case you need the thermophysical properties of air or ethylene glycol, you can also visit this site: http://www.mhtl.uwaterloo.ca/old/onlinetools/airprop/airprop.html.
However, you can't have as much information as in NIST (for example enthalpy, entropy, internal energy).
 
DoItForYourself said:
Indeed, it is very useful, but I like it without the interactive display (you can untick the respective box and get table instead of graph).

I don't know what your are talking about. I just typed some names in the research bar and then clicked on "Thermodynamic Gas Properties" and I got a list of value and even some formulas to make predictions. It is very useful. Thank you again for the help!
 
Yes, very useful that too. Thanks again! :D
 

Similar threads

  • · Replies 7 ·
Replies
7
Views
3K
Replies
5
Views
3K
Replies
5
Views
3K
  • · Replies 2 ·
Replies
2
Views
4K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 11 ·
Replies
11
Views
5K
  • · Replies 1 ·
Replies
1
Views
133
  • · Replies 40 ·
2
Replies
40
Views
9K
  • · Replies 4 ·
Replies
4
Views
32K
  • · Replies 5 ·
Replies
5
Views
3K