AP Chemistry unit 7 flashcards (˶･ω･˶っ)∋

for memeorization

Do equilibrium rates start off fast or slow?

Fast

If the forward reaction is faster are there more products or reactants?

More products

What is Kc?

Kc is the equilibrium constant for a reversible reaction at a given temperature

If K > 1 are more products produced than reactants?

Yes

What are the units for equilibrium?

There are no fixed units

When calculating equilibrium constants can we include solids and pure liquids?

No, only gases and aqueous solutions are included

What happens if an equilibrium reaction is flipped? Does it affect the equi constant?

If the reaction is reversed, K changes to 1/K

What happens if the coefficients of an equilibrium reaction are doubled? Does it affect the equi constant?

If the coefficients are doubled, the equilibrium constant K is raised to the power of two (K^2)

What happens to the equilibrium constant if two reactions are added?

new K = K1 * K2

What is Le Chatlier’s principal?

Le Chatelier's principle states that if a system at equilibrium experiences a concentration, pressure, or temperature change then the equilibrium will shift in a direction that counteracts that change to restore equilibruim

In an exothermic reaction does increasing the temperature shift the reaction?

Yes, it shifts to the left, favoring the reactants (heat is product in exo reactions)

How do you find direction of an equilibrium reaction?

You can use Le Chatelier's principle to predict the direction of the shift based on changes in concentration, pressure, or temperature

Or plug into the reaction quotient

If Q > K

Reaction shifts left favoring reactants

If Q < K

Reaction shifts right favoring products

What is Ksp?

Ksp is the solubility product constant, represents the equilibrium constant for a saturated solution of a salt

Can we use Ksp to find molar solubility?

Yes