Conjugate Acids and Bases Activity
Chemistry
Purpose:
To see the transfer of a proton in an acid base pair
Materials:
Acid Base Cards
Bingo chips
Procedure:
Obtain a set of cards and Bingo chips.
Lay out the cards according to the data table below. Look at the number of hydrogens on each formula card and count
out that number of bingo chips. Place a bingo chip for each hydrogen atom on the acid and base. Determine the
conjugate base and conjugate acid for the reaction. Lay down these cards and transfer the correct number of chips to
the conjugate side.
Data:
Acid
HCl
HCl
H2O
HC2H3O2
H3PO4
HOCN
H2SO4
HNO2
Base
H2O
NH3
NH3
H2O
HCO3-1
NH3
H2O
HSO4-1
Conclusions
1. Write the definitions for the following:
a. Conjugate acid
b. Conjugate base
2. How does an acid and conjugate base differ?
3. How do a base and a conjugate acid differ?
4. Write conjugate acids for the following:
a. HSO4-1
____________
-1
b. HCO3
____________
c. H2PO4-1
____________
d. H2O
____________
e. NH3
____________
5. Write conjugate bases for the following:
a. HSO4-1
____________
-1
b. HCO3
____________
c. H2PO4-1
____________
d. H2O
____________
e. HC2H3O2
____________
Conjugate Base
Conjugate Acid