WorksheetsThe pH Scale - Regents Chemistry
Total questions: 12
Worksheet time: 3600secs
A hydrogen ion, H+, in aqueous solution may also be written as
OH-
H2O
H3O+
H2O2
Which pH indicates a basic solution?
1
5
7
12
The table shows the molar concentrations of hydronium ions in four different solutions. Which solution has the highest pH?
(Hint: First, decide if the solution is acidic or basic. Then, decide if the solution would have the highest or lowest concentration of H3O+.)
A
B
C
D
Which relationship is present in a solution that has a pH of 6?
[H3O+] = [OH-]
[H3O+] > [OH-]
[H3O+] < [OH-]
[H3O+] + [OH-] = 7
A solution with a pH of 4.0 has a hydronium ion concentration a thousand times greater than a solution with a pH of
1.0
2.0
6.0
7.0
Compared to a solution with a pH value of 8, a solution with a hundred times lower hydronium ion concentration has a pH value of
6
7
9
10
As the pH of a solution changes from 3 to 4, the concentration of hydronium ions
decreases by a factor of 1
decreases by a factor of 10
increases by a factor of 10
increases by a factor of 1
As the pH of a solution is changed from 13 to 11, the concentration of hydronium ions
decreases by a factor of 100
decreases by a factor of 20
increases by a factor of 20
increases by a factor of 100
Which relationship is present in a solution that has a pH of 10?
[H3O+] = [OH-]
[H3O+] > [OH-]
[H3O+] < [OH-]
[H3O+] + [OH-] = 7
Which relationship is present in a solution that has a pH of 7?
[H3O+] = [OH-]
[H3O+] > [OH-]
[H3O+] < [OH-]
[H3O+] + [OH-] = 7
As the pH of a solution is changed from 3 to 1, the concentration of hydronium ions
decreases by a factor of 100
decreases by a factor of 20
increases by a factor of 20
increases by a factor of 100
As the pH of a solution changes from 2 to 5, the concentration of hydronium ions
decreases by a factor of 30
decreases by a factor of 1000
increases by a factor of 1000
increases by a factor of 30
