PQ – Acids and Bases in All Different Places
Hour______ Date______ Name____________________________
1. Definitions
 Ionic Compound
 Molecular Compound
 Acid
 Base
 Salt
 Electrolyte
 Neutralization
 Indicator
 Buffer
 Titration
o Standard Solution
o Unknown Solution
2. What are the 5 properties of acids and bases?
Acids
1
2
3
4
5
Bases
PQ – Acids and Bases in All Different Places
Hour______ Date______ Name____________________________
3. Draw the Lewis Structures for the following substances. For each:
 Give the name of the substance
 Label it as an acid, base, salt, or neither
a. H2S
b. NaOH
c. NaCl
d. SCl2
4. Rank the following acids from weakest to strongest:
H2SO4, HF, H3PO4, HCl
5. Name the following compounds, and label as an acid (A), base (B), salt (S), or neither (N):
____________________________ a. CaCl2
_________________________ d. LiOH
____________________________ b. HNO3
_________________________ e. Li2O
____________________________ c. Mg(OH)2
_________________________ f. CO2
6. Give the formulas for the following compounds, and label as an acid (A), base (B), salt (S), or
neither (N):
___________________ a. barium bromide
________________ d. aluminum hydroxide
___________________ b. hydrobromic acid
________________ e. dinitrogen monoxide
___________________ c. sodium hydroxide
_________________ f. sulfuric acid
7. Give the products for the following neutralization reactions. Label the acid, base, salt, and
water.
a. _____ HBr(aq) + _____ NaOH(aq) 
b. _____ HCl(aq) + _____ Mg(OH)2(aq) 
PQ – Acids and Bases in All Different Places
Hour______ Date______ Name____________________________
8. Given the information below, label the solutions as acidic, basic, or neutral.
What color would each show with pH paper?
pH
acidic, basic,
neutral
a) 3.8
b) 5.8
c) 7.8
color
pH
acidic, basic,
neutral
color
d) 7.0
e) 13.4
f) 7.1
9. Using the information in #8, answer the following questions:
a. Which is most acidic? _______________
least acidic? _____________
b. Which is most basic? _______________
least basic? _____________
c. (a) is ________ times less acidic than (b) and ________ times less
acidic than (c).
10. Look at the data in the table below and answer the questions:
Substance
initial pH
pH after 1 drop HCl
pH after 2 drops NaOH
A
10.7
10.2
11.2
B
4.4
4.3
4.5
C
7.0
1.9
12.4
PQ – Acids and Bases in All Different Places
Hour______ Date______ Name____________________________
a. Using your indicator table in the notes, give the color that each of the
substances will show before adding any acid or base:
Substance
initial
pH
A
10.7
B
4.4
C
7.0
acid, base, or
neutral?
color in methyl
red
color in
phenolphthalein
b. Look at the 3rd column of the top table. What is the Lewis Structure for HCl?
Is it an acid or a base? When you add HCl, what happens to the pH?
c. Look at the 4th column of the top table. What is the Lewis Structure for NaOH?
Is it an acid or a base? When you add NaOH, what happens to the pH?
d. Which solution is the best buffer: A, B, or C? Explain your answer.
11. If you titrate some vinegar (weak acid) of unknown concentration with a
standard 0.800 M solution of NaOH, what is the concentration of vinegar if the
titration required:
a. 5.0 mL of vinegar and 7.6 mL of NaOH
d. exactly 5 drops of vinegar and 31 drops of NaOH