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) CH3NH2
CH3NH3+
b) Br–
HBr
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–