1. Nonmusical Chairs Review
Acids and Bases

2. 1. What is the abbreviation for power of hydrogen?
2. What are three characteristics of acids?
3. What are three characteristics of bases?
A: pH
A: pH< 7, sour, release H+ (protons), or accept electron pairs, conduct electricity
A: pH>7, bitter, slipper, release OH-, accept H+, release electron pairs, conduct electricity

3. 4. What color does the indicator bromthymol blue turn in bases?
5. What color does the indicator phenolpthalein turn in acids?
6. What color does litmus paper turn in acids?
A: blue
A: clear
A: red

4. 8. What is the name of a chemical that can resist changes in pH?
7. What is the term for a chemical that changes color depending on the acidity or basicity of the environment?
8. What is the name of a chemical that can resist changes in pH?
9. The ability of a chemical to resist changes in pH is called….
A: indicator
A: buffer
A: buffering capacity

5. 10. An acid that contains H and donates an H+ when placed in solution.
11. An acid that donates a proton when in solution.
12. An acid that is an electron pair acceptor.
A: Arrhenius Acid
A: Bronsted Lowry Acid
A: Lewis Acid

6. 13. NaOH would be classified as what type of base?
14. NH3 would be classified as what type of base?
15. A substance that can either accept protons or donate them is referred to as….
A: Arrhenius Base
A: Lewis Base (electron pair donator) and Bronsted Lowry Base (proton acceptor)
A: amphoteric (water is an example)

7. 16. Acids range in pH from ….. 17. Neutral is a pH of….
18. Bases range in pH from…..
A: 0-7
A: 7
A: 7-14

8. 19. The conjugate of a strong acid is a….
20. The conjugate of a strong base is a….
21. If H2SO4 + H2O  ? + ?
A: weak base
A: weak acid
A: H3O+ + HSO4-

9. 22. NH3 + H2O  ? + ?
23. The species that results when a base accepts a proton is called the…
24. The species that results when an acid donates a proton is called the…..
A: NH4+ + OH-
A: conjugate acid
A: conjugate base

10. 25. If HCl is the acid, what is its conjugate base?
26. If H3PO4 is the acid, what is its conjugate base?
27. Is H3PO4 monoprotic, diprotic, or triprotic?
A: Cl-
A: H2PO4-
A: triprotic

11. 28. What type of Ka do weak acids have?
29. What type of Kb do strong bases have?
30. An acid that completely ionizes or dissociates in solution is called…..
A: small
A: large
A: strong acid

12. 32. As the [H+] increases what happens to the pH?
31. In Gatorade and Powerade, what compounds are found besides sugar that carry a charge?
32. As the [H+] increases what happens to the pH?
33. As the [OH-] increases what happens to the pH?
A: electrolytes
A: As the [H+] increases the pH decreases
A: As the [OH-] increases, the pH increases

13. 34. What is the general formula for finding pH?
35. What is the general formula for finding pOH?
36. What does the pH and pOH always add up to?
A: pH = -log [H+]
A: pOH = 14-pH or pOH = - log [OH-]
A: pH + pOH = 14

14. 37. What does the product of [H+] [OH-] always equal?
38. If the pH is 8, what is the pOH?
39. If the [H+] = 1 x 10-4, what does the [OH-] =?
A: [H+] [OH-] = 10-14
A: 6 pH + pOH = 14
A: = x [OH-]

15. 41. What type of reaction is HCl + NaOH  H2O + NaCl?
40. If the acid is H2SO4, and the [H+] = 10-4 what has to be done before finding the pH?
41. What type of reaction is HCl + NaOH  H2O + NaCl?
42. What type of acid/base combination would produce an alkaline (basic) salt?
A: muliply by 2 as the acid is diprotic
A: neutralization (that doesn’t mean that the salt is always neutral though. Salts can be acidic, basic, or neutral depending on the type of acid/base added together.
A: strong base and weak acid

16. 45. What household vegetable can be used as an acid/base indicator?
43. What is the E on a titration graph stand for if an indicator is used ?
44. If 60 mL a 1 M NaOH solution is titrated to an HCl solution and 30 mL is needed, what is the molarity of the HCl solution?
45. What household vegetable can be used as an acid/base indicator?
A: end point (for the indicator) and equivalence point for the moles
A: 2 M; find the moles of NaOH = 0.06 mol, then HCl = o.06 mol / 0.030L = 2M
A: red cabbage juice