Ch301 Acid Base Test Flashcards
Bronsted Lowry definition acids
Proton donors
Bronsted lowry definition base
proton acceptors
Lewis def acids
Electron pair acceptors
Lewis def base
Electron pair donors
Arrhenius base
Compound that break apart to give off a hydroxide ion
Arrhenius acids
Compound which break apart to give off an H+
Carboxylic acid
Contains carboxyl group
-COOH
Ternary acid
Contains 3 elements with hydrogen attached to at least one oxygen atom
Binary acid
HX
hydro(X)ic acid
Solution of known concentration
Titrant
What we put in buret
Solution of unknown concentration
Analyze; what we are analyzing
What we put in flask
Equivalence point
Point in titration at which stoichiometric amounts of acid and base have reacted
# mol OH- = # mol H+
End point
Point in titration at which chemical indicator changes color
when does pH = pKA
at 1/2 equivalence point
what is the resulting solution of the equivalence point
salt and water
when can we ignore x in mass expressions
when x is less than 5% of the value it is subtracted from
What might keep ignoring x from being a valid assumption
A large value of K
or a small initial concentration.
percent ionization formula
what type of arrow is used for problems regarding the half equivalence pt
forward error, all WA and or WB is neutralized to CB and all other products
at equivalence pt if 5 mols aniline is added, how much HNO3 is added?
5 mols is added(but not like 1/2 equivalence pt where at equilibrium that will be how much is left)
as H+ atoms get pulled off polyphonic acids what happens to the pH
it becomes more basic
