Question

how do you differenciate ideal and real gases

Answer 1

Technically, there are no ideal gases but several approach being ideal gases. One tells by experiment. If they obey the ideal gas laws they are ideal; if not, they are not ideal gases.

Answer 2

I think I used the wrong word in my response. I should not have said technically, there..... A better word would be practically (in practice) there are no ideal......