W4 Acid and pH l Flashcards
1
Q
Why acids and bases are important? (3)
A
acid /base reactions in our body
food contains different acids/bases
most drugs are weak acid or bases
2
Q
What are the 3 definitions of acid/base?
A
- Bronsted-Lowry
- Lewis Theory
- Arrhenius
3
Q
What are the bronsted-lowry definitions of acid/base?
A
Acid= proton donor
Base= proton acceptor
Acid-base reaction: H+ is transferred from an acid to a base
4
Q
What are the lewis-theory definitions of acid/base?
A
Lewis acid : accepts e- (electrophile), e- deficient
Lewis base : donates e- (nucleophile) to a nucleus with an empty orbital, e-rich
Form covalent bond
5
Q
Is water an acid or base?
A
Can be either
(Amphoteric solvent)
6
Q
What does the bronsted-lowry equation work better for?
A
WEAK acids and WEAK bases
