# pH and pOH Calculations Worksheet

```Date: _______________________________
Name: _____________________________________
Period: _______
pH and pOH Calculations Worksheet
Find the pH and the pOH of the solution.
pH
pOH
1. A 0.023 M solution of perchloric acid
2. A 6.6 x 10 -6 M solution of nitric acid
3. A 0.0334 M solution of potassium hydroxide
4. A 0.000901 M solution of magnesium hydroxide
5. A 0.000896 M solution of sulfuric acid
Find the [H+] and the [OH-] from the following values.
6. pH = 2.5
7. pH = 11.3
8. pOH = 4.6
9. pOH = 8.7
10. pH = 7.65
Determine the pH of each solution of the following bases.
11. 0.01 M sodium hydroxide
12. 0.001 M strontium hydroxide
13. 0.005 M aluminum hydroxide
14. 0.000675 M calcium hydroxide
[H+]
[OH-]
15. Methanoic acid (HCHO2) is a weak acid that undergoes the following ionization reaction:
HCHO2 ⇌ H+ + CHO2If 25.0 g of methanoic acid is dissolved to make 0.500 L of solution, what is the pH?
16. A weak base, methylamine, is dissolved in water according to the following dissociation reaction:
CH3NH2 (aq) + H2O (l) ⇌ CH3NH3+ (aq) + OH- (aq)
If 0.00355 moles of methylamine is present in 1.25 L of solution, what is the pH?
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