exam 1 Flashcards
(37 cards)
How do you find the equilibrium constant?
Products/Reactants
What is a dynamic equilibrium reaction?
There is no change in concentration. Reaction still occurring even if we can’t see it.
What is the net charge of a dynamic equilibrium reaction?
Zero
What does it mean when K=Q?
The reaction has reached equilibrium
what happens if Qc>Kc?
more reactants form
What happens if Qc=Kc?
no further net change
What is happening when k is small?
it means that the reactant is yielding little product. If k is small then no reaction is occurring.
What is a large k?
It’s when there is little reactants left. If it’s a large k we say the reaction goes to completion
What units are K and Q in?
they have no units
What states of matter do not appear in Q or K?
liquid and solids
Starting at equilibrium, what happens when you add reactants to the reactant side?
It will shift to form more products
Which way will the reaction shift when removing reactants?
It will shift to the left
What happens when you add reactants to the left?
the rxn shifts to the right
what way will the reaction shift if you remove reactants?
to the left
if you add products to the right which way will the reaction shift?
to the left
If you are adding heat (increasing temp) which way does the reaction shift?
shifts to the left
if you are removing heat (decreasing temp) which way does the reaction shift?
shifts to the right
What does an arrhenius acid contain and generate?
it contains H+ and generates H+ in H2O
what does an arrhenius base contain and generate?
It contains OH- and it generates OH- in H2O
what is a Brøndsted- Lowry acid?
A proton donor. Donates H+
What is a Brøndsted-Lowry base?
A proton acceptor. Accepts H+
Is it weak or strong when it completely dissociates?
Strong. Will have a large k
Is it weak or strong when it incompletely dissociates?
Weak
What is pH a measure of?
H3O+
