Presentation is loading. Please wait.

Presentation is loading. Please wait.

The Determination of an Equilibrium Constant Chemistry 117.

Published byBrianne Malone Modified over 8 years ago

Similar presentations

Presentation on theme: "The Determination of an Equilibrium Constant Chemistry 117."— Presentation transcript:

1 The Determination of an Equilibrium Constant Chemistry 117

2 Links UC Davis Chem Wiki – http://chemwiki.ucdavis.edu/Physical_Chemistry/ Chemical_Equilibrium/The_Equilibrium_Constant Purdue University: calculating Eq. Constants – http://www.chem.purdue.edu/gchelp/howtosolve it/Equilibrium/Calculating_Equilibrium_Constants. htm

3 Equilibrium Constant Value of K eq shows which way the equilibrium has shifted (ie product or reactant favored) For the reaction: aA + bB  P

4 Video Lecture Keq Video Part 1 Keq Video Part 2

5 Experimentally Finding K eq We will be using the relationship between absorbance and concentration to determine our equilibrium concentrations – You will first be creating a calibration curve – To find equilibrium concentrations you will use the calibration curve (relates absorbance to concentration) – Then use the equilibrium concentrations to find K eq

Download ppt "The Determination of an Equilibrium Constant Chemistry 117."

Similar presentations

Keq vs. Q Period 2 Sandra.

Keq vs. Q Period 2 Sandra.
The Reaction Quotient, “Q”

The Reaction Quotient, “Q”
When do you use this? You use Keq to find the concentration of a reversible reaction at equilibrium. You use Q to find the concentration of a reversible.

When do you use this? You use Keq to find the concentration of a reversible reaction at equilibrium. You use Q to find the concentration of a reversible.
KINETICS -REACTION RATES

KINETICS -REACTION RATES
Equilibrium. Equilibrium Some reactions (theoretically all) are reversible reactions, in which the products take part in a separate reaction to reform.

Equilibrium. Equilibrium Some reactions (theoretically all) are reversible reactions, in which the products take part in a separate reaction to reform.
Standard 9: Chemical Equilibrium chapter 18

Standard 9: Chemical Equilibrium chapter 18
Percent Reaction and Q Chem 12 Page 509 & 517-520.

Percent Reaction and Q Chem 12 Page 509 &
Reaction Quotient-Q- Or Trial K. The Keq is a constant- a number that does not change Increasing the Temperature of an endothermic equilibrium shifts.

Reaction Quotient-Q- Or Trial K. The Keq is a constant- a number that does not change Increasing the Temperature of an endothermic equilibrium shifts.
Reaction Quotient Le Chatlier’s Principle K vs. Q.

Reaction Quotient Le Chatlier’s Principle K vs. Q.
Chemical Equilibrium Chapter 18. Chemical Equilibrium Happens to any reversible reaction in a closed system Happens to any reversible reaction in a closed.

Chemical Equilibrium Chapter 18. Chemical Equilibrium Happens to any reversible reaction in a closed system Happens to any reversible reaction in a closed.
16-2: The Law of Chemical Equilibrium. Remember… Chemical equilibrium is achieved when the rate of the forward rxn is equal to the rate of the reverse.

16-2: The Law of Chemical Equilibrium. Remember… Chemical equilibrium is achieved when the rate of the forward rxn is equal to the rate of the reverse.
Equilibrium Chapter 16. Reversible Reactions – A chemical reaction in which the products can regenerate the original reactants. Reversible Reactions –

Equilibrium Chapter 16. Reversible Reactions – A chemical reaction in which the products can regenerate the original reactants. Reversible Reactions –
Chapter 18 Equilibrium A + B  AB We may think that all reactions change all reactants to products, or the reaction has gone to completion But in reality,

Chapter 18 Equilibrium A + B  AB We may think that all reactions change all reactants to products, or the reaction has gone to completion But in reality,
Learning Goals identify common equilibrium constants, including Keq, Ksp, Kw, Ka, Kb and write the expressions for each solve problems related to equilibrium.

Learning Goals identify common equilibrium constants, including Keq, Ksp, Kw, Ka, Kb and write the expressions for each solve problems related to equilibrium.
Chemical Equilibrium Objectives: 1. Describe a reversible reaction. 2. Define chemical equilibrium and explain how it is achieved. 3. Explain Le Chatelier's.

Chemical Equilibrium Objectives: 1. Describe a reversible reaction. 2. Define chemical equilibrium and explain how it is achieved. 3. Explain Le Chatelier's.
Chemical equilibrium. Forward and reverse reactions Not all chemical reactions occur in one direction. They can go “forward” – to the right. They can.

Chemical equilibrium. Forward and reverse reactions Not all chemical reactions occur in one direction. They can go “forward” – to the right. They can.
Factors Affecting Equilibrium. Equilibrium: Once equilibrium has been reached, it can only be changed by factors that affect the forward and reverse reactions.

Factors Affecting Equilibrium. Equilibrium: Once equilibrium has been reached, it can only be changed by factors that affect the forward and reverse reactions.
5.2 - EQUILIBRIUM CONSTANT: K EQ Unit 5: Equilibrium.

5.2 - EQUILIBRIUM CONSTANT: K EQ Unit 5: Equilibrium.
Lecture 21/21/05. Law of Mass Action Example H 2 (g) + I 2 (g) ↔ 2HI (g)

Lecture 21/21/05. Law of Mass Action Example H 2 (g) + I 2 (g) ↔ 2HI (g)
The Mole and Molar Mass Moles are the currency of chemistry 1 mole = 6.02 x 10 23 particles = Avogadro’s number Molar mass of an element = mass of one.

The Mole and Molar Mass Moles are the currency of chemistry 1 mole = 6.02 x particles = Avogadro’s number Molar mass of an element = mass of one.

Similar presentations

Ads by Google