1 / 10

5.1 The equilibrium condition of chemical reaction

Chemical reaction. a A ＋ b B ＝ y Y ＋ zZ. Chapter 5 Chemical equilibrium. 5.1 The equilibrium condition of chemical reaction. Δ r G m ＝ 0  at equilibrium ；. Δ r G m ＞ 0  right spontaneous ；. Δ r G m ＜ 0  left spontaneous 。. d ξ ＝ d n B / ν B. a A ＋ b B ＝ y Y ＋ zZ.

takoda
Télécharger la présentation

5.1 The equilibrium condition of chemical reaction

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chemical reaction aA＋bB＝yY＋zZ Chapter 5 Chemical equilibrium 5.1 The equilibrium condition of chemical reaction ΔrGm＝0 at equilibrium； ΔrGm＞0  right spontaneous ； ΔrGm＜0  left spontaneous 。

  2. dξ＝dnB/νB aA＋bB＝yY＋zZ dGT，P＝（yμY＋zμZ－aμA－bμB)dξ dGT，P＝ΔrGmdξ ΔrG＝ΔrGmΔξ

  3. ΔrGm(T) 5.2 Perfect gas equilibrium aA(g) ＋bB (g) ＝yY (g) ＋zZ (g) ΔrGm (T) — standard molar Gibbs function change of chemical reaction

  4. At equilibrium ΔrG m =0 Standard equilibrium constant K(T)＝exp[－ΔrGm (T)/RT]

  5. K ＞ J  K ＜ J  Ratio of partial pressure K＝ J  at equilibrium；

  6. Perfect gas Real gas Ideal solution and dilute solution aB=cB Pure liquid or solid aB=1 5.3 General case of a reaction aA(aA) ＋bB (aB) ＝yY (aY) ＋zZ (aZ)

  7. (1) (2) 5.4 Standard equilibrium constant aA(aA) ＋bB (aB) ＝yY (aY) ＋zZ (aZ)

  8. 5.5 Van’t Hoff equation

  9. lnK Indefinite integral equation Definite integral equation ΔrHm= constant

More Related