Acids and Buffers

  1. life chemistry is based on ____
    water
  2. cells contain ____ water
    80-90%
  3. TRUE or FALSE
    Proper pH is essential to some living systems
    FALSE - all
  4. TRUE or FALSE
    Maintaining proper pH is critical to survival of cells and biological systems
    TRUE
  5. It is a substance that breaks into [H+] ions in an aqueous solution
    Acid
  6. It is a substance that breaks into [OH-] ions in an aqueous solution
    Base
  7. TRUE or FALSE
    Aqueous solution is any solution where H2O is the solute
    FALSE - solvent
  8. Citric or Vinegar is an example of?
    Acid
  9. Give some examples of common acids
    • 1) Citric Acid
    • 2) Vinegar (acetic/ethanoic acid)
  10. It has sour taste
    Acid
  11. One characteristic of acid is?
    It taste sour
  12. This may burn your skin
    Acid
  13. This  turns the pH paper meter(litmus paper) into red
    Acid
  14. Other Examples of acids are HCl and H2SO4  read as?
    • 1) Hydrochloric Acid
    • 2) Sulfuric Acid
  15. Soap, Ammonia and bleach are common ___
    Bases
  16. Give some common bases
    • 1) Soap
    • 2) Ammonia
  17. This has a bitter taste
    Base
  18. It can be poisonous and corrosive
    Base
  19. It feels slippery
    Base
  20. This can turn the litmus paper into blue
    Base
  21. NaOH, KOH, NH3 read as _____ are other examples of bases
    Sodium Hydroxide, Potassium Hydroxide and Ammonia
  22. Three Definitions of Acids and Bases
    • 1) Svante Arrhenius
    • 2)Bronsted-Lowry
    • 3) Gilbert Lewis
  23. Whose definitions states that an acid is a substance that when dissolved in water produces or increases the concentration of hydrogen ions
    Svante Arrhenius definiton
  24. Whose definitions states that a base is a substance that when dissolved in water produces or increases the concentration of hydroxide ions
    Svante Arrhenius definition
  25. In Arrhenius definition it states that an _____is a substance that when dissolved in water produces or increases the concentration of hydrogen ions
    Acid
  26. In Arrhenius definition it states that a  base is a substance that when dissolved in water produces or increases the concentration of _____ ions
    hydroxide
  27. Their concept is based on the fact that acid-base reactions involve the transfer of H+ ions from one substance to another.
    • Johannes Bronsted and 
    • Thomas Lowry
  28. Whose definition states that an acid is a proton (H+) donor?
    Bronsted-Lowry definition
  29. Whose definition states that a base is a proton (H+) acceptor?
    Bronsted-Lowry definition
  30. In Bronsted-Lowry definition it states that an acid is a proton (H+) ____.
    Donor
  31. In Bronsted-Lowry definition it states that a ____ is a proton (H+) acceptor.
    base
  32. In Bronsted-Lowry ___ must have one ____ proton to donate
    acid ------ removable
  33. In Bronsted-Lowry base must have one ____ to accept a proton
    nonbonding pair of electrons
  34. The emphasis of Bronsted-Lowry concept is on _____
    proton transfer
  35. TRUE or FALSE
    The emphasis of Bronsted-Lowry concept is on proton transfer, it also applies to reactions that do not occur in aqueous solution.

    TRUE
  36. Whose definition states that an acid accepts a pair of electrons?
    Lewis definition
  37. Whose definition states that a base donates a pair of electrons?
    Lewis definition
  38. In Lewis definition, ____ are electron pair acceptors
    acids
  39. In Lewis definition, a base are electron pair ___
    donors
  40. This definition is a more general definition than the the other definitions.
    Gilbert Lewis definition
  41. Image Upload 1
    MEMORIZE
  42. Image Upload 2
    • 1) Acid -  [H+] producer
    • 2) Base - [OH-] producer
  43. Image Upload 3
    • 1) Acids - Proton (H+) donor
    • 2) Base - Electron pair donor
  44. It is a substance capable of acting as either an acid or a base and can also donate or accept a proton
    Amphiprotic
  45. TRUE or FALSE
    Water is an example of Amphiprotic and Amphoteric
    TRUE
  46. It is the particle formed that has received the proton.
    Conjugate Acids
  47. It is the particle ;eft from the acid once it has donated the proton.
    Conjugate base
  48. A substance that can act as either an acid or base.
    Amphoteric
  49. An acid that has lots of water and small amount of acid
    Dilute acid
  50. An acid that has lots of acid and not much water
    concentrated acid
  51. An acid that releases lots of proton (H+)
    Strong acid
  52. An acid that releases fewer proton (H+)
    weak acid
  53. It is the extent to which a compound is acidic or basic and is measured by the _____
    pH scale
  54. In measuring acid strength, an indicator is needed. What are some examples of indicators?
    • 1) Litmus paper
    • 2)Universal Indicator
  55. It measures how acidic or basic a solution is
    pH scale
  56. Acids have a pH from ____
    0-7
  57. Bases have a pH from ____
    7-14
  58. ___ pH value indicates a stronger acid
    lower
  59. Higher pH value indicates what?
    strong base
  60. It is a solution that resists changes in pH when small amounts of acids and bases are added
    BUFFER
  61. TRUE or FALSE
    STRONG acids and STRONG bases completely dissociate in water and they create an equilibrium system
    FALSE - DO NOT CREATE
  62. TRUE or FALSE
    WEAK acids and WEAK bases dissociate to a far LESSER degree and they create an equilibrium system
    TRUE
  63. An acid or base that differ only in the presence or absence of a proton are called
    conjugate acid-base pair
  64. two formulas that differ by proton (H+) are called
    conjugate acid-base pair
  65. it is a method of reporting hydrogen ion concentration
    pH
  66. pH = -log[H+]
    formula
Author
carisandra
ID
341686
Card Set
Acids and Buffers
Description
buffers
Updated