{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Obviously as the reaction proceeds the mole fraction

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: G = nA dµA + nB dµB + nC dµC + nD dµD + µA dnA + µB dnB + µC dnC + µD dnD Invoking the Gibbs- Duhem equation, the sum of the first four terms can be taken as 0. We now define the extent of reaction by the quantity ξ. This quantity will allow us to track how much of the products have formed. At the beginning of the reaction ξ = 0 (if we start with a reactive mixture containing initially only A and B molecules). We arbitrarily define ξ by: dξ = dnC so, on the basis of the reaction stoichiometry, we write dnA = - dξ dnB = - 2 dξ dnD = 3 dξ Therefore dG is written as: dG = dξ (µC + 3 µD - µA - 2 µB) or $ ∂G ' & ) = µ C + 3µ D − µ A − 2µ B = Δ RG % ∂ξ (P,T € 190 So we conclude that the change in Gibbs free energy, G, with extent of reaction...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern