pH and Buffer Solutions Flashcards
1
Q
Which substances have ionisation constants
A
Weak acids and bases have ionisation constants
2
Q
What is the general Ka equation for an acid
A
HA + H2O H3O+ + A-
Ka= ([H3O+] x [A-]) / [HA]
3
Q
Why is [H2O] ignored in the Ka equation
A
It is ignored because the concentration of water is a constant
4
Q
What is the general pKa equation for an acid
A
pKa = -log(Ka)
