Ionization of Water/ pH/ pOH Flashcards
autoionization
the process where one water molecule donates a hydrogen ion to another
ionization constant formula
Kw= [H30+][OH-]
water ionization constant(Kw)
equilibrium constant for water that is the product of H30+ concentration and OH- concentration
- temperature dependent
@25°C Kw=
1.00x10^-14
strong acids and bases…
ionize completely in water
[H3O+] > [OH-]
acid
[H3O+] < [OH-]
base
[H3O+] = [OH-]
neutral
mixing a strong acid and a strong base
- the acid and base will dilute each other
- the acid and base neutralize each other
pH=
-log[H3O+]
when converting a number into a logarithm, it must have
the same number of placeholders after the decimal as the number of sig figs in the number
antilogarithm
the concentration of the hydronium ion can be calculated from pH using the antilogarithm
the “p” concept
since using “p” to express very small concentrations is useful, the “p” concept is used to express small concentrations of many substances
pX=
-log[X]