1603 ACID BASE EQUILIBRIA PART 3

    16.7 (9pts)
  1. Define a weak base.
  2. Write the equilibrium constant expression for ammonia.
  3. Define Kb
  4. Calculate the concentration of OH- in a 0.15M solution of ammonia.
  5. What are the two general classes of weak bases? Give an example of each.
  6. What are the number of moles of NaClO needed to create a 2.0L solution with a pH of 10.50 (show your work)?



 

    16.8 (15pts)
  1. Using ammonia and water, explain the relationship between Ka & Kb and how it relates to water
  2. What is pKa & pKb?
  3. If the Ka for a HF is 6.8x10-4 what is the Kb for the flouride ion?
  4. If the Ka for a Chlorous acid is 1x10-2 what is the Kb for the Chlorite ion?





 

    16.9: write out the sentences with the proper choice of word)
  1. In the acid HA what is A- considerd (conjugate acid or conjugate base?)
  2. if the anion (A-) reacts with water it will produce what polyatomic ion?
  3. In the 7 strong acids the Anion (A-) produces a (negligable or excessive) tendency to produce OH- ions?
  4. If HA is not one of the strong acids then the A- will definitely form a (weak or strong) base in solution?
  5. This will cause the pH of the water to (increase or decrease)?
  6. For example if CH3COO-(aq) is added to water then end product would be -->
  7. NH4+(aq) will act like a (acid or base) in solution and will (dontate or accept) a proton to form (H30+ or OH-).
  8. How does a hydrated Fe3+ ion act as an acid? Does this make sense?
  9. Draw a diagram showing a hydrated Fe3+ ion producing (H30+ ions in solution.
  10. What are the possible combinations of a salt forming an acidc, basic, or ndeutral solution when dissolved in water.
    1. Anion (N) and Cation (N)= WHAT HAPPENS?
      (who qualifies and give an example)
    2. Anion (makes OH-) and Cation (N)= WHAT HAPPENS?
      (who qualifies and give an example)
    3. Anion (N) and Cation (H30+)= WHAT HAPPENS?
      (who qualifies and give an example)
    4. Anion (makes OH-) and Cation (H30+)= WHAT HAPPENS?
      (who qualifies and give an example)





 

 

 

 

 

 
 

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