PHYSICAL CHEMISTRY IN BRIEF

CHAP. 8: CHEMICAL EQUILIBRIUM [CONTENTS] 240

Solution

K•=

γE

γPγA

xE

xPxA

=

γE

γPγA

nE

nPnA

(nE+nP+nA),

K[c]=

γ

[c]

E

γP[c]γ[Ac]

cE

cPcA

cst=

γ

[c]

E

γP[c]γ[Ac]

nE

nPnA

V cst,

wherecst= 1 mol/dm^3 , and E, A, P as subscripts denote ester, acetic acid and 1-pentene. While

the ratio of the amounts of substance at equilibrium is the same in both relations, the ratio of

the activity coefficients is different.