acids and bases Conceptual
A compound with a pH of 12.5 is acidic or basic?
Basic
If a compound has a pH of 13.48 what is the pOH?
pOH = 0.52
what is the pH of a 0.72M HClO4?
pH = 0.14
What is the pH of a 0.62M NaOH solution?
13.8 = pH
What does acid create when added to water?
Hydronium (H3O)
If a compound has a [H+] of 2.35 x 10-6, what is the pOH?
pOH = -8.37
Find the pOH of a .234M HBr solution.
13.36 = pOH
What is the pH of a .25M LiOH solution?
pH=13.39
What is the Kw for the autoionization of water at 25C?
Kw = 1.0 x 10-14
If your given a compound with a pH of 1.27 what is the [OH-]?
1.86 x 10-13 = [OH-]
If a solution of HF (Ka=6.8 x 10-4) has a pH of 3.65, calculate the concentration of HF that was added to water.
[HF] = 3.0 x 10-4
pH= 10.17
A compound has a pOH of 12.5, is this acidic or basic?
acidic
If given a [OH-] of 1.9 x 10-7 what is [H+]?
5.2 x 10-8 = [H+]
If oxalic acid (C2H2O4) has. Ka of 4.5 x 10-7 calculate the equilibrium constants for every value. (excluding solids and liquids) The initial concentration of oxalic acid is 0.83M
If given .85 M of NH3 with a base dissociation constant of 8.5x10-4 find the pH of the solution.
pH = 10.42
Rank the following in order of most acidic to least acidic.
A: [H+] = 2.82 x 10-7
B: [OH-] = 2.34 x 10-6
C: pOH = 4.30
D: pOH =12.50
D>A>B>C
If given a [H+] of 7.9 x 10-8 what is the [OH-]?
1.29 x 10-7 = [OH-]
The pH for 0.731 M solution of HNO2 is 3.78. Determine the value of Ka for HNO2.
Ka=3.8 x 10-8
What mass of NaOH would need to be dissolved in 100mL of water to produce a solution with a pH of 11.5?
.013 grams of NaOH