CHM 2046C Module Eleven-Chapter 16 Name:____________

Module 11ii: Acid/Base Equilibria Jespersen Chapter 16

Possible

Actual

B. Writing Equilibrium Constant Expressions Section 16.3

1

Answer 

C. Determination of Kw from Kc ; Kb from Ka & Kw ; Show Kb x Ka = Kw Lecture/16.3

1

Answer 

E. Determination of pH of weak acids/bases Problems Section 16.5

2

Answer 

F. Hydrolysis Reactions  Section 16.6

2

Answer 

G. Common Ion Effect Problem Section 16.7

2

Answer 

H. Discussion Questions Chapter 16

1

 Answer

I. Determination of pH of polyprotic acids and/or Buffer Calculation Problem 16.8

2

Answer 

J. Acid-Base Properties of Salts Section 16.6

1

Answer 

Module 11ii Total:

12

 

Part B: Equilibrium Constant Expressions of Acids and Bases 1 point

Write the appropriate equilibrium constant expressions for the following reactions they represent:

 

a. C5H5NH+1 + H2O C5H5N + H3O+1

 

 

Ka =

 

b. NH3 + H2O NH4 1+ + OH 1-

 

 

Kb =

 

c.                   H2CO3 + H2O = HCO3 1- + H3O+1

 

 

Ka =

 

 

d. HCO3 1- + H2O == CO3 2- + H3O+1

 

 

Ka2 =

 

 

e. C5H5N + H2O ==== + OH 1- + C5H5N+1

 

 

Kb =

 

 

 

f. H2O + H2O == H3O 1+ + OH 1-

 

Kw =