
Equilibrium Flashcard- AP Chemistry
Flashcard
•
Chemistry
•
10th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is chemical equilibrium?
Back
Chemical equilibrium is the state in a reversible reaction where the rates of the forward and reverse reactions are equal, resulting in constant concentrations of reactants and products.
2.
FLASHCARD QUESTION
Front
What does it mean for a reaction to be reversible?
Back
A reversible reaction is one that can proceed in both the forward and reverse directions, allowing reactants to form products and products to reform reactants under suitable conditions.
3.
FLASHCARD QUESTION
Front
What is the equilibrium constant (K)?
Back
The equilibrium constant (K) is a numerical value that expresses the ratio of the concentrations of products to reactants at equilibrium, each raised to the power of their coefficients in the balanced equation.
4.
FLASHCARD QUESTION
Front
How do you write the equilibrium expression for a reaction?
Back
For a reaction aA + bB ⇌ cC + dD, the equilibrium expression is K = [C]^c [D]^d / [A]^a [B]^b, where [X] represents the concentration of species X.
5.
FLASHCARD QUESTION
Front
What is the significance of a large K value?
Back
A large K value (K >> 1) indicates that at equilibrium, the concentration of products is much greater than that of reactants, favoring the formation of products.
6.
FLASHCARD QUESTION
Front
What is the significance of a small K value?
Back
A small K value (K << 1) indicates that at equilibrium, the concentration of reactants is much greater than that of products, favoring the formation of reactants.
7.
FLASHCARD QUESTION
Front
What is Le Chatelier's Principle?
Back
Le Chatelier's Principle states that if a system at equilibrium is subjected to a change in concentration, temperature, or pressure, the system will adjust to counteract that change and restore a new equilibrium.
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