AP Chem Unit 7 Mac Flashcards

K stands for

equilibrium constant

K=

K=products/reactants

Q stands for

reactant quotient

Q=

Q=products/reactants

Large K means

products favored

What do you leave out of Q&K equations?

solids and liquids

What do you do to K if reversing rxn?

1/k

What do you do to K if doubling rxn?

k^2

How do you find K of a mechanism?

multiply K values of each step

increasing pressure shifts to…

side with more moles of gas

if Q>K…

reactants favored

Increasing products shifts…

to reactants

Increasing temp shifts to…

endothermic side

What ions are always soluble?

Group 1 cations, NH4+, NO3-

solubility shortcut for XY

X^2

Solubility shortcut for XY2

4x^3

Solubility shortcut for XY3

27x^4

Large x means

more soluble

When does a precipitate form?

when Q>K