The document is a review worksheet containing 20 multiple choice and short answer questions about acid-base chemistry concepts including: 1) Using symbols to represent the relationship between [H+] and [OH-] in acidic, basic, and neutral solutions 2) Writing the chemical equation for the self-ionization of water 3) Classifying solutions based on pH and identifying the strongest acid or base 4) Calculating pH, pOH, [H+], or [OH-] from given values 5) Distinguishing between strong and weak acids/bases and identifying acid-base reactions

1. Name _________________________________________________ Group _______________
Date __________________________________________________ List # _______________
Reviewing concepts
1.- Use the symbols <,>, and = to express the relationship between the concentration of
H+ and OH- ions in acidic, neutral, and basic solutions.
2.- Write the chemical equation that represents the self-ionization of water.
3.- Classify the following acids as strong or weak.
a)H2CO3 b)HCN c)H2SO4 d)HNO3 e)HC2H3O2
4.- Consider the pH of the following items: root beer pH=5.8, pickles pH=3.5, glass
cleaner pH=7.8, kitchen cleaner pH=10.9, cranberry juice pH=2.9. Place the items in
order of most acidic to most basic. __________________________________________________
Which item has the highest [H+]? ____________Which item has the highest[OH-]?_______
5.- Use the data in the table below to answer the following questions.
Substance Ammonia Lemon Antacid Blood Soft drink
pH 11.3 2.3 9.4 7.4 3.0
a) Which substance is the most basic? _____________________________________
b) Which substance is closest to neutral?___________________________________
c) Which substance has a pOH of 11.0?_____________________________________
d) Which substance is the most acidic?_____________________________________
6.- What is the [OH-] in an aqueous solution in which [H+]=5.4 x 10-3 M?
7.- What is the pH and pOH of the solution described in question #6 ?
8.- What is the pH of a bile sample that has a [H+] = 1 x 10 -8 M? Is the solution acidic or
basic?
9.- Identify the acid, base, conjugate acid and conjugate base in the following
equation: NH3 + H2O <--> NH4+ + OH-
10.- Complete the following table:
[H+] [OH-] pH pOH Acidic, basic or
neutral
1 x 10 -6 M
-5
2.8 x 10
6.4 x 10 -12

2. Neutral
11.- Determine the pH of each of the following solutions, and classify each as acidic,
basic or neutral.
a)[H+]= 5.6 x 10 -6 b)[H+]= 9.2 x 10 -9
c)[H+]= 7.2 x 10 -12 d) [OH-]= 6.3 x 10 -5
12.- What factor determines the acidity of a solution?_________________________________
13.- What is the range of pH values in the following solutions:
a)basic b)acidic c)neutral
14.- What method(s) can you use the measure the pH of a solution?
15. What happens to the [H+] as the pH of a solution increases?
16.- What factor determines whether an acid or base is strong or weak?
17.- Classify the following bases as strong or weak.
a)NaOH b)Al(OH)3 c)Mg(OH)2 d)NH3
18.- Neutralization reaction occur when an acid and a base react to form salt and
water. Which of the following reactions are neutralization reactions?
a)HNO3 + NaOH  NaNO3 + H2O b)HCl + LiOH LiCl + H2O
c)Zn + HCl ZnCl2 + H2 d) HCl + NaOH  NaCl + H2O
19.- Antacids, like milk of magnesia, are used to neutralize the HCl (gastric juice) in our
stomach. Does the pH of the stomach increase or decrease? Explain.
20.- What is the concentration of[ H+] and [OH-] in pure water at 25 C?