Chapter 21 Equilibria Flashcards
1
Q
Define conjugate acid–base pairs
A
Two species (an acid-base pair on each side of an acid-base equilibrium equation) that are related to each other by the difference of a hydrogen ion.
2
Q
Define pH mathematically
A
pH = −log ([H+])
3
Q
[H+] =
A
[H+] = 10⁻ᵖᴴ
4
Q
Define Ka mathematically (eg. CH3COOH)
A
Ka=[H+][CH3COO-]/[CH3COOH]
5
Q
Define pKa mathematically
A
pKa = -log(Ka)
6
Q
Define Kw mathematically
A
Kw=[H+][OH-]
7
Q
Define buffer solution
A
A buffer solution is a solution which resists pH changes when small amounts of acids or alkalis are added.
8
Q
Ksp =
A
Ksp = [Ax+ (aq)]ᵃ [By- (aq)]ᵇ
9
Q
State what is meant by the term partition coefficient Kpc
A
The ratio of the concentrations of a solute in two different immiscible solvents in contact with each other when equilibrium has been established.
