1 / 8

Math with Equilibrium Expressions

Math with Equilibrium Expressions. Unit…less – Say it Ain’t So!! . P. 618 Thermodynamic Equilibrium Constants are unit-less!!! . Magnitude of Equilibrium Constants. What is “ k eq ” revealing? What does it mean? Gives us information about composition of equilibrium mixture

kemal
Download Presentation

Math with Equilibrium Expressions

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. Math with Equilibrium Expressions

  2. Unit…less – Say it Ain’t So!! • P. 618 • Thermodynamic Equilibrium Constants are unit-less!!!

  3. Magnitude of Equilibrium Constants • What is “keq” revealing? What does it mean? • Gives us information about composition of equilibrium mixture H2 (g) + I2 (g) 2 HI (g)

  4. Comparing K values to 1 • If K >>1, the reaction is product-favored; • product predominates at equilibrium • Equilibrium lies to right

  5. Comparing K values to 1 • If K<<1, the reaction is reactant-favored; reactant predominates at equilibrium. • Equilibrium lies to left.

  6. Example: Which side of reaction would be favored at constant temperature? Reactants Favored Products Favored Turn to pg. 620 Complete Practice Exercise Get out Eq. Worksheet, Complete #10

  7. DirectionalImportance 2 N2 (g) + 3 H2 (g) 2 NH3 (g) • Keqexpression of the forward reaction is the reciprocal of the Keq expression of the reverse reaction. • RECIPROCALS! Keqforward = _____1______ Keqreverse Turn to pg. 621 Complete Practice Exercise

  8. Combining Equilibria • Turn to pg. 622 Sample Exercise 15.5 • Similar Approach as Hess’s Law: 1. Reverse is reciprocal 2. Multiplier becomes exponent 3. Two or more reactions: Eq. constant = [product] x [of the two] Eq. constant = [K1] x [K2]

More Related