Acids etc. Equations Flashcards
1
Q
How do you calculate pH?
A
pH = -log10[H+(aq)]
2
Q
How do you calculate the concentration of hydrogen ions from the pH of a solution?
A
[H+(aq)] = 10-pH
3
Q
How do you calculate Kw (assuming that you have both the concentration of H and OH ions)?
A
Kw = [H+][OH-]
4
Q
What is Kw at 25°C?
A
10-14
5
Q
How do you calculate pOH?
A
pOH = - log [OH]
6
Q
How do you calculate the pH of a strong base?
A
pH = 14 - pOH
7
Q
Weak Acids
How do you calculate Ka?
A
([H+][A-]) / [HA]
8
Q
How do you calculate Ka from pKa?
A
Ka = 10-pKa
