Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Chemistry 128


chemical kinetics investigation of the rate at which rxns occur
rate how fast a quantity changes w/ time
rxn rate how fast reactants are consumed and products formed
rate = change in quantity/ time elapsed
rate law = k[A][B]
method of initial rates initial rates of rxn is measured w/ several different starting amounts of reactants
R-->P rate= k[R]^x
order (0) stays the same x1
order (1) doubles x2
order (2) x4
order (3) x8
log(a)(b) loga+logb
log a/b loga-logb
log a^b bloga
collision theory reactant particles must collide, collide w. enough energy to initiate rxn, and have proper orientation
increase rate of rxn temp. add more reactants.
exothermic AB+C --> A+BC means BC is stonger than AB
endothermic AB+C--> A+BC meand AB is stronger than BC
catalyst lower A. E
unimolecular A-->B
bimolecular A+B-->AB or AB+C->ABC
termolecular A+B+C->ABC
Arrenhenius acid substance that donates a proton
Arrenhius Base substance that accepts a proton
Monoprotic acid only 1 proton to donate
monoprotic base can only accept 1 proton
polyprotic acid can donate several protons
polyprotic base can accept several protons
Amphiprotic a substance that acts as both an acid and a base
The stronger the acid the weaker the conjugate base
The stronger the base the weaker the conjugate acid
Ka is used to measure the strength of the acid
kb is used to measure the strength of the base
Ka= Products / Reactants
kb= Products/ Reactants
k=kw= 1.0x 10^-14 @ 25 C
pH= -log[H]
pOH= -log[OH]
[H]= 10^-pH
[OH]= 10^-pOH
kw= [H][OH]
pH+pOH= 14.00
kakb kw
acidic solution pH less than 7
basic solution pOh greater than 7
pka= -logka
pkb= -logkb
As acid strength increases ka increases and pka decreases
as base strength increase kb increases and pkb decreases
Reaction direction: k<1 rxn is left
reaction direction: k>1 rxn is right
k= kakb/kw
Cl- neutral
No3- neutral
Br- neutral
ClO4- neutral
Na, Ca, k, ba neutral
diprotic: ka1kb2= kw
diprotic: ka2kb1= kw
triprotic:ka1kb3= ka2kb2= ka3kb1= kw
Lewis acid electron pair acceptor
lewis base electron pair donor
buffer resist pH change when acid or base is added both. must be an acid and a base that do not react with each other. usually conjugate acid-base pair
Hendersen-Hasselbach equation pH=pka+log(base/acid)
buffer should have pka close to ph
indicators weak acid or base whose acidic &basic forms are different colors (loss or gain of a proton)
solubility is a continuum
solubility how many moles/grams dissolve in a given amount of water
precipitation will begin when.. Q=ksp
Ksp is solubility of solution 18.2 or appendix J
Created by: threasa.hicks