Have an account?
Skip to Content
Build your own quiz
Suggestions for you
33 questions
Show Answers
See Preview
- 1. Open EndedCalculate the pKa of lactic acid, given that when the concentration of free acid is 0.01 M and lactate is 0.087 M and the pH is 4.8.
- 2. Open EndedCalculate the pH of a mixture of 0.1 M acetic acid and 0.2 M sodium acetate. The pKa of acetic acid is 4.76.
- 3. Open EndedCalculate the ratio of the acetate and acetic acid required in a buffer of pH 5.3.
- 4. Open EndedWhat is the pH of the buffer containing: 0.5 M sodium acetate and 1.0 M acetic acid?
- 5. Open EndedWhat will the pH if you dilute 100 ml of 0.5 M NaOH to 1L with distilled water?
- 6. Open EndedWhat volume of Acetic acid (17.6 N) and what amount (g) of Sodium Acetate would you need to prepare 100 ml of 0.2 M buffer, pH 4.66 (pKa of Acetic acid = 4.76 and MW of Sodium Acetate = 136)
- 7. Open EndedWhat is the pH of a 10‑8 M HCl solution?
- 8. Open EndedCalculate the pH of a solution prepared by mixing 500 ml of 0.25 M Sodium Acetate with 250 ml 0.1 M HCl.
- 9. Open EndedA 0.2 L of 0.05 M solution of dibasic (Na2HPO4) phosphate buffer is mixed with 0.16 L of 0.05 M monobasic (NaH2PO4) phosphate buffer. Calculate pH of the buffer solution
- 10. Open EndedWhat are the concentrations of HOAc (Acetic acid) and OAc‑ (Acetate) in a 0.2 M Acetate buffer, pH 5.0? The pKa for HOAc = 4.76
- 11. Open EndedPrepare 3 L of 0.2 M Acetate buffer, pH 5.0 starting with Sodium Acetate (MW= 136) and 1 N Acetic Acid (pKa = 4.76). Calculate the amount of Sodium Acetate (g) and amount of Acetic acid (ml)
- 12. Open EndedWhat is the pH of a solution when 100 ml of 0.1 N NaOH is added to 150 ml of 0.2 M HOAc?
- 13. Open EndedDetermine the pH of a solution prepared by mixing a 15 ml of 0.085 M NaOH and 135 ml of distilled water.
- 14. Open EndedGiven that 0.1 M solutions of acetic acid and sodium acetate, describe the preparation of a 1 L of sodium acetate buffer, pH 5.4.
- 15. Open EndedCalculate the ionic strength of 0.15 M solution of Fe2(SO4)3.
- 16. Open EndedCalculate the pH and pOH of 0.2 M solution of NaOH. Click
- 17. Open EndedHow many mls of 12 M Acetic acid must be added to 500 ml of 0.5 M Sodium Acetate to prepare a buffer of pH 4.76? (pKa of Acetic Acid is 4.76)
- 18. Open EndedThe pH of acetic acid was adjusted with concentrated NaOH, at what pH would you find an equal amount of acetic acid and its conjugate base? The pKa for acetic acid is 4.76
- 19. Open EndedAssume you have a 150 ml of 0.1 M HCl solution. You took 100 ml from it and added 400 ml of distilled water into it. What will be the pH of this new HCl solution?
- 20. Open EndedA 500 ml buffer solution containing 0.2 M formic acid and 0.25 sodium formate is mixed with 100 ml of 0.05 M HCl. What will be the pH of this new solution?
- 21. Open EndedWhat statement(s) is true when acids and bases neutralize each other? a) The amount of H+ and OH‐ is the same b) Water is produced c) Salt is produced d) All of the above
- 22. Open EndedWhat is the name of pH indicator you will use today for colorimetric method?
- 23. Open EndedList three methods of pH estimation that you will perform in pH Lab?
- 24. Open EndedWhich of the compound is made up of strong acid and weak base? a) Sodium acetate b) Ammonium chloride c) Ammonium hydroxide d) None of the above
- 25. Open EndedIn Henderson‐Hasselbalch equation, [A‐] stands for:
- 26. Fill in the BlankA change of 1 pH unit represents a _______change in the hydrogen ion concentration.
- 27. Open EndedBuffer
- 28. Open EndedGood Buffer Qualities
- 29. Open EndedBuffer capacity:
- 30. Open EndedpH Meter
- 31. Open EndedpKa Acetic acid
- 32. Open EndedpKa of NH4OH
- 33. Open EndedIonic strength can be calculated using the following formula:
- Answer choicesTagsAnswer choicesTags