chapter 8: CAS 😒 Flashcards
1
Q
define Arrhenius Theory
A
acid is a substance that dissociates in water to give H+ ions
base is a substance that dissociates in water to give OH- ions
2
Q
define bronsted lowry theory
A
acid is a proton donor
base is a proton acceptor
3
Q
define lewis theory
A
acid is an electron pair acceptor ➡️ electrophile
base is an electron pair donor ➡️ nucleophile
4
Q
why is Ka1 always larger than Ka2?
A
protons are more easily lost from neutral species than from negative ions
5
Q
what is a conjugate acid base pair
A
a pair of species that differs from each other by only one proton (H+)
6
Q
define buffer
A
a solution that is able to maintain a fairly constant pH when a small amount of acid or base is added
7
Q
what are the components of a buffer
A
a weak acid/weak base and its conjugate salt
