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MCAT Gen. Chem Ch. 6

TermDefinition
Reversible Reactions Eventually: Reach a state in which energy is minimized and entropy is maximized.
Chemical Equilibria Are: Dynamic, meaning that the reactions are still occurring just at a constant rate
If Q < Keq: Delta G < 0, and the reaction proceeds in the forward direction
If Q = Keq: Delta G = 0, and the reaction is in dynamic equilibrium.
If Q > Keq Delta G > 0, and the reaction proceeds in the reverse direction.
Le Chatelier's Principle States that when a chemical system experiences a stress, it will react so as to restore equilibrium
Three Main Stresses Applied To A System Include: Changes in conc, pressure and volume, and temp.
Increasing Conc Of Reactants / Decreasing Conc Of Products Will: Shifts the reaction to the right
Increasing Pressure On A Gaseous System (Decreasing Its Volume) Will: Shift the reaction toward the side with fewer moles of gas.
Increasing Temp. Of An Endothermic Reaction / Decreasing Temp Of Exothermic Reaction Will: Shift the reaction to the right
Kinetic Products Are: Higher in free energy than thermodynamic products and can form at lower temperatures. They are also called "fast products"
Thermodynamic Products Are: Lower in free energy than kinetic products and are more stable. The thermodynamic pathway is more spontaneous (more negative Delta G)
Eq. 6.1: Equilibrium Constant Keq = [C]^c * [D] ^d / [A] ^ a * [B] ^ b. small c = reaction coefficients.
Eq. 6.2: Reaction Quotient Qc = [C]^c * [D] ^d / [A] ^ a * [B] ^ b. small c = reaction coefficients.
Created by: SamB91