Real vs. Ideal

[nixon13]

Could someone please explain the differences between real gases and ideal gases, what they are, and which equations go with which gas? Thank you. 😀

 

[Optimism Smiles]

Could someone please explain the differences between real gases and ideal gases, what they are, and which equations go with which gas? Thank you. 😀

I think I read yesterday that no gas behaves 100% ideally but under certain conditions (such as low pressure and high temperatures) gases behave nearly ideally. Then you can use the ideal gas law...

 

[doc3232]

Well, it is chemistry so as you expect, nothing is ideal. You can never find exact info using PV=nRT.
So always just assume it is ideal and use that equation.
But you should that why nothing is an ideal gas.

 

[Sea of ASH]

ideal gas is basically a hypothetical situation. we just assume that 1) there are no intermolecular forces between the gas molecules and 2) occupy a negligable volume compared to the container. this is done so that PV=nRT can be used to calculate stuff.

real gases are exactly that... real lol. that formula is not valid anymore, but if we just tweek it a bit to take into considerations those two assumptions, we are good to go.

Hope that helped!

 

[nixon13]

thanks a lot guys, idk where i would be without this forum!

 

[userah]

i'll tell you where. a couple points less on the DAT. haha =)