How to read a Thermodynamic table?

[Beembo]

When solving a word problem in Thermodynamics and are given both pressure and tempreature of a fluid or water, how do we know if we should get information about internal energy and entropy from the Pressure Table or the Temperature Table?

 

[BvU]

Hi Beembo,

You could be a bit more specific. Here is a link with the tables you mention (A4 and A5). There is also an A6 etc. What's the problem ?

 

[Chestermiller]

The tables are equivalent. You might be able to avoid interpolation if you know the temperature or the pressure.