Didn't think I'd be learning chemical thermodynamics as a premed but here I am. This video helped me, a non-chem major, understand the concepts very well so major props for that, my man. Great video.
The more accurate form of the equation is P+F=C+N In the video N is taken as 2 because the examples were built on the fact that there are two intensive variables, namely temperature and pressure. If you need to apply this equation to an alloy system where the phase diagram mostly given as concentration vs temperature, you need to take N as 1. Therefore, the equation becomes P+F=C+1. Shortly, 2 is not a constant in Gibbs Phase Rule. 2 given in the video represents number of intensive variables.
Hey , thank u so much you explained it in a very good way , I have a question could u help me I have a report about the phase rule could u tell me what content I should make
It's because when one of the variables is kept constant, the degree of freedom (F) is modified and reduced to 1. Therefore the formulae becomes F=C-P+1 and is known as modified Gibbs phase rule.