1. Calculation of equilibrium concentrations from Ka Calculate the pH of a 1.0 M Acetic acid solution, using approximations. Ka = 1.8 x 10^-5
HC2H3O2+H2O⇆H3O(+)+C2H3O2(-)
Initial:
Change
at Equilibrium:

2. Calculation of species concentrations from Ka, using the quadratic formula
Calculate the pH of a 0.000010 M Acetic acid solution
HC2H3O2+H2O⇆H3O(+)+C2H3O2(-)
Initial:
Change:
at Equilibrium:

3. Calculation of Ka from the pH of a weak acid solution
Calculate the Ka of HNO2 if a 0.10 M HNO2 solution has a pH of 2.187
Initial:
Change:
at Equilibrium:

4. Calculation of Ka from the percent ionization
Calculate the Ka of Glycine if a 0.10 M Glycine solution is 4.1 x 10^-3 ionized
HGly+H2O⇆H3O(+)+Gly(-)
Initial:
Change:
at Equilibrium: