c15.slides.equilibrium.p1

c15.slides.equilibrium.p1 - Chapter 15 Chemical Equilibrium...

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Chapter 15 Chemical Equilibrium
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aA + bB cC + dD Chemical equilibrium - is a condition which is achieved when the rate of the forward reaction is equal to the rate of the reverse reaction. Chemical equilibrium is dynamic , not static. Le Chatelier’s Principle : “When a stress is applied to a system that is in equilibrium, the system will shift in a way to relieve the stress.”
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Forms of Stress A. Change in concentration - Increasing the concentration of a reactant will shift the equilibrium to the right (more products are formed). - Decreasing the concentration of a product will shift the equilibrium to the right (more products are formed). - Increasing the concentration of a product will shift the equilibrium to the left (more reactants are formed). - Decreasing the concentration of a reactant will shift the equilibrium to the left (more reactants are formed).
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B. Change in Pressure - will only affect the equilibrium system when gases are present. If the pressure is increased the equilibrium will shift in the
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c15.slides.equilibrium.p1 - Chapter 15 Chemical Equilibrium...

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