Exercises
Exercise 1. For each of the following conjugate acid-base pairs, indicate which species is the acid and which is the base. Draw Lewis structures that show all valence electrons and the formal charges.
a) CO32- and HCO3–
HCO3– is the acid, and its conjugate base is CO32-.
b) CH3OH and CH3OH2+
CH3OH2+ is the acid, and its conjugate base is CH3OH.
c) CH3NH3+ and CH3NH2
CH3NH3+ is the acid, and its conjugate base is CH3NH2.
Exercise 2. What is the conjugate acid of the following?
a) CHNH3
b) Br–
c) CH3CH2OH
d) HO–
b) Br–
c) CH3CH2OH
d) HO–
Exercise 3.What is the conjugate base of the following?
a) CH3CH2OH
b) HCO3–
c) HI
d) H2O
e) H3O+
b) HCO3–
c) HI
d) H2O
e) H3O+
Exercise 4.Use curved arrows to show the movement of electrons in the following equations. Label the acids and bases.
a) HBr + H2O → Br– + H3O+
b) CH3NH2 + H2O → CH3NH3+ + OH–