Acid-Base Water, pH and pOH Worksheet
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Chemistry
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Asked: May 9th, 2015
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| Acid-Base Water, pH and pOH Worksheet | |
| 1. | Assuming 100% ionization of HCl in dilute solutions, what is the pH of 0.010 M HCl? |
| 2. | Determine the [OH-], [H3O+], pOH and pH of a 0.01 mol/L KOH solution. |
| 3. | Determine the [OH-], [H3O+], pOH and pH of a 0.045 mol/L HCl solution. |
| 4. | What is the [H3O+] of a solution having a pH of 3.4? |
| 5. | If nitric acid is 100% ionized in a 0.0050 M solution, what is the pH of this solution? |
| 6. | A sodium hydroxide solution is prepared by dissolving 6.0 g NaOH in 1.00 L of solution. Assuming that 100% dissociation occurs, what is the pOH and the pH of this solution? |
| 7. | A solution was made by dissolving 0.837 g Ba(OH)2 in 100 mL final volume. If Ba(OH)2 is fully broken up into its ions, what is the pOH and the pH of this solution? |
| 8. | A certain brand of beer had a hydrogen ion concentration equal to 1.9 X 10-5 mol/L. What is the pH of this beer? |
| 9. | A soft drink was put on the market [H+]=1.4 X 10-5 mol/L. What is its pH? |
| 10. | Calculate the value of both pH and pOH of the following solutions. |
| (a) 0.020 M HCl | |
| (b) 0.0050 M NaOH | |
| (c) A blood specimen containing 7.2 x 10-8 H+ mole/L. Is the blood specimen slightly acidic or slightly basic? | |
| (d) 0.00035 M Ba(OH)2, where this compound has to be considered to be 100% dissociated. | |
| 11. | "Calcareous soil is soil rich in calcium carbonate (lime). The pH of such soil generally ranges from just over 7 to as high as 8.3. What value of [H+] corresponds to a pH of 8.3? Is the soil slightly acidic or slightly basic? |
| 12. | Find the values of [H+], pOH and [OH-] that correspond to each of the following values of pH. |
| (a) 2.90 (the approximate pH of lemon juice) | |
| (b) 3.85 ( the approximate pH of sauerkraut) | |
| (c) 10.81 (the pH of milk of magnesia) | |
| (d) 4.11 (the pH of orange juice, on the average) | |
| (e) 11.61 (the pH of dilute, household ammonia) | |
| 13. | Estimate the percentage ionization of acetic acid in solutions with concentrations of (a) 0.010 M and (b) 0.0010 M. |
| 14. | What is the pOH of a 0.010 M NaOH solution? |
| What is the pH of this solution? | |
| 15. | Determine the [OH-], [H3O+], pOH and pH of a 0.001 M KOH solution. |
| 16. | Calculate the [H3O+], [OH-], pH and pOH of these solutions; |
| a) 1.0 M HCl, | |
| b) 0.50 M HNO3, | |
| c) 0.0020 M HClO4, | |
| d) 1.5 X 10-4 M KOH, | |
| e) a solution prepared by dissolving 0.040 g NaOH in 2.0 L of solution, | |
| f) a solution prepared by diluting 1.0 mL of 0.20 M HCl to a total volume of 5.0 L, | |
| g) a solution made by dissolving 0.10 mol Na2O in 1.0 L of solution. |
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