Chapter 8 - Acids And Bases Flashcards
Bronsted Acid
Donate Proton
Bronsted Base
Accept Proton
Amphiprotic
Act as Bronsted acid and base
H20
Amphoteric
Act as Lewis Acid and Base
Example zinc, al and hydroxides of some metals
Lewis Acid
Electron Pair acceptor
Lewis Base
Electron pair donor
Characteristics of Strong Acids and Bases
Good proton donor / acceptor
higher conductivity
Strong acid has a …
Weak conjugate base
ka value means
Large K
stronger the acid
measure of dissociation
kw
Ka *kb
1 * 10 ^-14
dissociation constant of water
pkw
pkb +pka
pka value means
low pka means a strong acid
Why is and pka a better means to measure strength that ph
Value does not depend on the concentration of the acid or base
ka, pka depend on temperature
Based on the equilibirum reactions anf vhanging the temp wipll affect the POE
Dissociation is an exo or endo
endothermic
bond break