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Equilibrium/rxn rate
| Question | Answer |
|---|---|
| collision theory | atoms, ions, and molecules can react to form products when they have collided, provided that the particles have enough KE |
| reaction properties | particles collide enough KE right orientation |
| activation energy | minimum amount of energy particles must have to react |
| activated complex/transition state | arrangement of atoms at peak of activation energy |
| rate | measures the speed of any change that occurs within an interval of time |
| rate equation | x y Rate=[reactant] [reactant] |
| factors affecting reaction rates | temperature: higher temps = faster rates concentration: higher concentration = faster rates |
| catalysts | substance that increases rate of reaction without being used up by allowing the reaction to occur at lower temps |
| inhibitor | substance that interferes with the actions of the catalyst; slows reaction |
| reversible reaction | reaction occur simultaneously in both directions |
| equilibrium | forward and reverse reaction occurs at the same rate and the same time |
| le chateliers principle | is stress is applied to a system in equilibrium, the system changes to relieve that stress |
| equilibrium constant(Keq) | ratio of product concentrations to reactant concentrations at equilibrium with each concentration raised to the power equal to their coefficients |
| Keq > 1 | product favored |
| Keq < 1 | reactant favored |
| Keq | used for any reactions |
| Ka | used for acids |
| Kb | used for bases |
| Ksp | solubility product(for things that are dissolving in solutions) |
| Kp | used when pressure is used instead of concentration |
| Kc | used when concentration in used |
| rate laws | expressions relating rate of reaction to concentration of reactants |
| K | specific rate constant |
| [] | molar concentration |
| P and Q | determined experimentally (usually 0, 1, 2) |
| free energy | energy available to do work |
| spontaneous reaction | reaction that occurs naturally and favors formation of products at specific conditions |
| non-spontaneous reaction | reaction that doesn't favor the formation of products at specified conditions |
| entropy | measure of disorder of a system; influences spontaneity of reaction |
| particle size | smaller particles = more surface area = faster rates |
| reactant form products | forward reaction |
| products form reactant | reverse reaction |
Created by:
neisha0501
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