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Flashcards for Chemistry Chapter 17
Flashcards for Chapter 17 in Chemistry
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Chemistry
10th Grade
04/24/2012

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Term
What is chemical equilibrium?
Definition
the state in which forward and reverse reactions balance each other because they occur at equal rates
Term
What is equilibrium constant?
Definition
Keq is the numerical value that describes the ratio of product concentration to reactant concentrations, with each raised to the power ocrresponding to its coefficient in the balanced equation
Term
What is heterogeneous equilibrium?
Definition
a state of equilibrium taht occurs when the reactants and products of a reaction are present in more than one physical state
Term
What is homogeneous equilibrium?
Definition
a state of equilibrium that occurs when all the reactants and products of a reaction are in the same physical state
Term
What is the law of chemical equilibruim?
Definition
states that at a given temperature, a chemical system may reach a state in which a particular ratio of reactant and product concentrations has a constant value
Term
What is a reversible reaction?
Definition
a reactoin that can take place in both the forward and reverse directions; leads to an equilibrium state where the forward and reverse reactions occur at equal rates andthe concentrations of reactants and products remain constant
Term
What is Le Chatelier's principle?
Definition
States that if a stress is applied to a system at equilibrium, the system shifts in the direction that relieves the stress
Term
What is the solubility product constant?
Definition
Ksp, which is an equilibrium constant for the dissolving of a sparingly soluble ionic compound in water
Term
What is the equation for equilibrium constant?
Definition
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Term
In what two states of matter are not included in the equilibrium constant expression?
Definition
liquids and solids
Term
If Keq is greater than 1, what part is favored?
Definition
products
Term
If Keq is less than 1, what part is favored?
Definition
reactants
Term
What does the equilibrium do if you add reactants?
Definition
shift to the right
Term
What happens if you remove products?
Definition
the equilibrium shifts to the right and more products are produced
Term
What happens if you add products?
Definition
equilibrium will shift to the left
Term
What will happen if you decrease the volume?
Definition
increased presure will cause the reaction to shift in the direction of the fewer gas particles
Term
What happens in you decrease the temperature of an exothermic reaction?
Definition
it will shift to the right
Term
What will happen if you increase the temperature of an exothermic reaction?
Definition
it will shift to the left
Term
What will happen if you increase the temperature of an endothermic reaction?
Definition
it will shift to the right
Term
What will happen if you decrease the temperature of an endothermic reaction?
Definition
it will shift to the left
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