How can we help?

You can also find more resources in our Help Center.

20 terms

Acid-Base Equilibria Part II

Chemistry the central science chapter 16 calculation questions. Practice/review test. Part 2.
STUDY
PLAY
What is the concentration (in M) of hydroxide ions in solution at 25.0 C with pH = 4.282?
Decibel 1.91
A 7.0 x 10^-3 M aqueous solution of Ca(OH)2 at 25.0C has a pH of _________.
12.15 (red egg)
Using the data in the table, which of the conjugate bases below is the strongest base?
OAc-
The Ka for HCN is 4.9 x 10^-10. What is the value of Kb for CN-?
Quint 2.0 (2.0 x 10^-5)
A 0.1 M solution of _______ has a pH of 7.0.
NaNO3
What is the pH of an aqueous solution at 25.0C in which [H+] is 0.0025 M?
2.60 (indigo)
The Ka of hydrazoic acid (HN3) is 1.9 x 10^-5 at 25.0C. What is the pH of a 0.35 M aqueous solution of HN3?
2.59 (blue igloo)
A 0.15 M aqueous solution of the weak acid HA at 25.0C has a pH of 5.35. The value of Ka for HA is _______.
Decibel 1.3
A 0.1 M aqueous solution of _________ will have a pH of 7.0 at 25.0C.
KCl
Of the following which is the weakest acid?
HIO
Of the following acids __________ is not a strong acid.
HNO2
Classify the following compounds as weak bases (W) or strong bases (S): ammonia fluoride ion sodium hydroxide
WWS
The molar concentration of hydroxide ion in pure water at 25.0C is _________.
1.0 x 10^-7
What is the pH of a 0.015 M aqueous solution of barium hydroxide?
12.48 (green hat)
Using the data in the table, which of the conjugate bases below is the weakest base?
F-
The Ka of hypochlorous acid (HClO) is 3.0 x 10^-8 at 25.0C. What is the % ionization of hypochlorous acid in a 0.015 M aqueous solution of HClO at 25.0C?
0.14
HA is a weak acid. Which equilibrium corresponds to the equilibrium constant Kb for A-?
A-(aq) + H20 (l) (double arrows) HA(aq) + OH-(aq)
The acid dissociation constant at 25.0C for hypochlorous acid (HClO) is 3.0 x 10^-8. At equilibrium, the molarity of H3O+ in a 0.010 M solution of HClO is ______________.
Quint 1.7
In the gas phase reaction below, NH3 is acting as a(n) ______________ base but not as a(n) ____________ base.
Lewis, Arrhenius
A- is a weak base. Which equilibrium corresponds to the equilibrium constant Ka for HA?
HA(aq) + H2O(l) (double arrows) H3O+(aq) + A-(aq)