Physical Chapter 9: Acids & Bases Flashcards
What does an acid release?
H+ (protons)
What does a base act as?
A proton acceptor
What is a characteristic of pure water?
[H+] = [OH-]
What is a Bronsted-Lowry base defined as?
Any chemical that can accept protons
What is a Bronsted-Lowry acid defined as?
Any chemical that releases protons
What happens to a strong acid in water?
It fully dissociates.
What happens to a strong base in water?
It fully dissociates
What happens to a weak acid/base in water?
Partial dissociation - equilbrium position lies well to the left
Does water dissociate on its own?
Yes, very slightly
What does water dissociate into?
H3O+ & OH-
What is Kw?
The ionic product of water - constant
How do you calculate Kw?
Kw = [H+][OH-]
What does Kw equal in pure water?
Kw = [H+]2
How do you calculate pH?
pH = -log10[H+]
How do you calculate hydrogen ion concentration?
[H+] = 10-pH
What is the difference in [H+] for monoprotic & diprotic aicds?
Monoprotic = conc. H+ equals conc. acid
Diprotic = conc. H+ equals 2x conc. acid