Approaching Equilibrium Lesson 1 Approaching Equilibrium Many chemical
Approaching Equilibrium Lesson 1
Approaching Equilibrium Many chemical reactions are reversible if the activation energy is low and the system is closed. Reactants ⇌ Products
Approaching Equilibrium Many chemical reactions are reversible if the activation energy is low. Reactants ⇌ Products Forward Reaction is left to right Reverse Reaction is right to left
Lets see what happens to some reactants if they are placed in a reaction vessel and allowed to react.
Approaching Equilibrium Products Reactants Forward Rate Reverse Rate
Approaching Equilibrium Products Reactants Forward Rate Reverse Rate
Approaching Equilibrium Products Reactants Forward Rate Reverse Rate
Approaching Equilibrium Products Reactants Forward Rate Reverse Rate
Approaching Equilibrium Products Reactants Forward Rate Reverse Rate
Approaching Equilibrium Products Reactants Forward Rate Reverse Rate
Approaching Equilibrium Products Reactants Forward Rate Reverse Rate Are Equal
Approaching Equilibrium Products Reactants Forward Rate Reverse Rate Are Equal Are Constant
Graphing the Approach to Equilibrium product Concentration reactant Time
Graphing the Approach to Equilibrium reactant Concentration product Time
Graphing the Approach to Equilibrium Forward rate Concentration Reverse rate Overall rate Time
Approaching Equilibrium Reactant concentrations start high and decrease as the reaction proceeds. The forward rate, which depends on collisions of the reactants, also decreases. Product concentrations start at zero and increase as the reaction proceeds. The reverse rate, which depends on collisions of the products, also increases. Eventually the forward rate is equal to the reverse rate and the concentrations are constant. This is equilibrium.
Characteristics of a System at Equilibrium The Forward rate = The Reverse rate The Reactant and Product concentrations are constant The Macroscopic (observable) properties are constant The system is Dynamic as the forward and reverse reactions continue. The equilibrium can be approached from starting with reactants or starting with products.
Approaching Equilibrium from Products Reactants Forward Rate Reverse Rate
Approaching Equilibrium from Products Reactants Forward Rate Reverse Rate
Approaching Equilibrium from Products Reactants Forward Rate Reverse Rate
Approaching Equilibrium from Products Reactants Forward Rate Reverse Rate
Approaching Equilibrium from Products Reactants Forward Rate Reverse Rate
Approaching Equilibrium from Products Reactants Forward Rate Reverse Rate Are Equal Are Constant Same as before
If you start with products all aspects of the approach to equilibrium are reversed Products and Reverse Rate decrease Reactants and Forward Rate increases
Conditions Necessary for Equilibrium Closed system Constant temperature Ea is low so the reaction is reversible
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