Review the following concepts if needed - pH of Acids and Bases Study Guide
Practice Questions
For problems 1-4, Show the reaction when the following substances react.
| 1. | H2SO4 + NaOH → | |
| 2. | Al + HCl → | |
| 3. | Lithium oxide + nitric acid → | |
| 4. | Calcium carbonate + HCl → |
| 5. | Calculate the pH of a 0.005 M HNO3 solution. |
| 6. | Calculate the pH of a 0.010 M KOH solution. |
| 7. | Calculate the pH of concentrated HCl (12 M). |
| 8. | What is the pH of a 0.25 M solution of hydrofluoric acid? |
| 9. | What is the pH of a 0.010 M solution of formic acid? |
| 10. | What is the pH of a 1.25 M solution of ammonia (Kb = 1.8 * 10–5)? |
| 11. | What is the pH of a 4.3 M solution of aniline (Kb = 4.28 * 10–10)? |
| 12. | What is the pH of a phosphate buffer solution with 1.35 M H2PO4– and 0.58 M HPO4–2 (Ka of H2PO4– is 6.2 * 10–8)? |
| 13. | What is the pH of a carbonate buffer solution with 1.36 M H2CO3 and 0.61 M HCO3–? |
Answers
| 1. | H2SO4 + 2NaOH → Na2SO4 + 2H2O |
| 2. | 2Al + 6HCl → 2AlCl3 + 3H2 |
| 3. | Li2O + 2HNO3 → 2LiNO3 + H2O |
| 4. | CaCO3 + 2HCl → CaCl2 + CO2 + H2O |
| 5. | 2.3 |
| 6. | 12 (pOH = 2) |
| 7. | –1.08 |
| 8. | 1.90 |
| 9. | 2.87 |
| 10. | 2.33 |
| 11. | 4.36 |
| 12. | 6.84 |
| 13. | 6.00 |
Excerpted From:
From Chemistry Success in 20 Mintues A Day. Copyright © 2005 by LearningExpress, LLC. All Rights Reserved.
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