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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.

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5.1 The equilibrium condition of chemical reaction

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  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

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