TABLE OF CONTENTS | 1. | Define the term pH. |
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| 2. | What is the effect of temperature on pH? |
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| 3. | What is the possible pH of pure water at 65 C? |
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| 4. | What is the effect of dilution on pH of an acidic solution? |
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| 5. | What is the pOH of pure water at 25 C? |
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| 6. | What chemicals would you use to make a buffer of pH (i) 5, (ii) 10? |
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| 7. | Name electrodes that are usually employed to measure pH of a solution. Which one is most suitable? |
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| 8. | What is a combined electrode? What is the mechanism of its working? |
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| 9. | Name the indicator that you use in pH titration. |
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| 10. | What is the desirable pH range for drinking water? |
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| 11. | Who suggested the term pH value? |
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| 12. | What are calomel and glass electrodes? |
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| 13. | Define emf of a cell. |
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| 14. | Why is the hydrogen electrode not used in pH measurements? |
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| 15. | How is the equivalence point determined in acid-base titrations? |
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| 16. | Which buffer solutions are used in standardization of pH meter? |
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| 17. | What type of curve is obtained in the experiment? |
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| 18. | What is the pH of pure water? |
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| 19. | Why is standardization of pH meter done before taking pH readings? |
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| 20. | What is the inflexion point? |
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| 21. | What is the significance of pH determination? |
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Answers
| 1. | pH value of a solution is defined as the negative power of which [H + |
