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Worksheet 33: Relating H+ concentration to pH Topic 8

Set A: Relating H+ concentration to pH Objective: To test your ability to relate concentration
of H+ to pH of a solution
+ +
Determine the pH of the solutions given the [H ] or [H3O ] concentrations.
Given concentration of solutions Determine pH
+ -1
1. [H3O ] = 1.0 x 10 M

Need help? Study Book Pg 177 Set 20 - 21 pH =

-4
+
2. [H ] = 1.0 x 10 M pH =
+ -11
3. [H ] = 1.0 x 10 M pH =

5. [OH ] = 1.0 x 10 M pH =
-
-7

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-
-2
6. [OH ] = 1.0 x 10 M pH =

Determine the ion concentrations. Need help? Study Book Pg 178 Set 23 - 24
Given concentration of solutions Determine these concentrations
-
+
-4
7. [H ] = 1.0 x 10 [OH ] =

-
-11
+
8. [H3O ] = 1.0 x 10 [OH ] =

-
-1
+
9. [OH ] = 1.0 x 10 [H ] =

-
-7
+
10. [OH ] = 1.0 x 10 [H3O ] =

Below, pH of two solutions are given. You are asked to compare H+ (hydrogen or hydronium ion)
concentration of one solution to another. Follow the example comparison given below.

Solution A Solution B Example comparisons
Ex. pH 6 pH 7 .Solution A has 10 times more H+ than solution B
.Solution B has 1/10 the H+ ions of Solution A
th
.As solution A changes to Solution B, there is 10 fold decrease
in H+ concentration

11. pH 8 pH 10
Need help? Study Book Pg 179 - 180 Set 25 - 27
12. pH 13 pH 12

13. pH 5 pH 2

14 . pH 7 pH 11

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