Calculate the pH of a 0.177 M aqueous solution
of pyridine
(C5H5N, Kb =
1.5×10-9) and the equilibrium
concentrations of the weak base and its conjugate acid.
pH
=
[C5H5N]equilibrium
=
M
[C5H5NH+]equilibrium
=
M
1a. What is the pH of an aqueous solution of
6.17×10-2 M potassium
hydroxide?
pH =
1b. What concentration of barium
hydroxide is needed to give an aqueous solution with a pH
of 12.190?
Molarity of barium hydroxide = M
a. Calculate the pH of a 0.538 M aqueous
solution of ethylamine
(C2H5NH2,
Kb = 4.3×10-4)
b. Calculate the pH of a 0.0473 M aqueous
solution of piperidine
(C5H11N, Kb =
1.3×10-3).
Calculate the pH of a 0.0333 M aqueous solution
of dimethylamine
((CH3)2NH, Kb =
5.9×10-4) and the equilibrium
concentrations of the weak base and its conjugate acid.
pH
=
[(CH3)2NH]equilibrium
=
M
[(CH3)2NH2+
]equilibrium
=
M
Calculate the pH of a 0.0152 M aqueous solution
of nitrous acid (HNO2,
Ka = 4.6×10-4) and the
equilibrium concentrations of the weak acid and its conjugate
base.
pH
=
[HNO2]equilibrium
=
M
[NO2-
]equilibrium
=
M
Calculate the pH of a 0.0438 M aqueous solution of dimethylamine
((CH3)2NH, Kb = 5.9×10-4) and the equilibrium concentrations of the
weak base and its conjugate acid.
Calculate the pH of a 0.289 M aqueous solution
of quinoline
(C9H7N, Kb =
6.3×10-10) and the equilibrium
concentrations of the weak base and its conjugate acid.
Calculate the pH of a .215 M aqueous solution of aniline C6H5NH2,
Kb= 7.4x10^-10 and the equilibrium concentrations of the weak base
and it’s conjugate acid
Calculate the pH of a 0.0454 M aqueous solution of
triethelyene C2H5(3)N, Kb= 5.2x10^-4 and the equilibrium
concentrations of the weak base and its conjugate acid
What is the pH of an aqueous solution that contains 0.282 M NaCN
and 0.724 M HCN?
Ka(HCN)
= 4.9 x 10-10
a.
pH = 9.72
b.
a) pH = 8.90
c.
pH = 13.23
d.
pH = 20.49
e.
pH = 9.31