Since ionization is endothermic,
the Kw increases as temperature increases.
[H3O+] and [OH]- are
inversely related to each other.
equilibrium constant
Like ANY ________, the Kw is temperature dependent.
pure water
In ________, [H3O+] and [OH]- are equal to each other.
When an acid or base is dissolved in water,
[H3O+] and [OH]- are not equal to each other.
Acidic solution
if [H3O+] > 1.0 × 10-7, then [OH-] < 1.0 × 10-7
Basic solution
if [OH-] > 1.0 × 10-7, then [H3O+] < 1.0 × 10-7
pOH =
log [OH-]
-log[H+]
Log [OH-] = 14
But
log{H+] is pH
Neutral solution
if [H3O+] = [OH-] = 1.0 × 10-7
pH=
-log [H+]