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Unit 4 Review

Total questions: 41

Worksheet time: 6hrs 21mins

Name
Class
Date
1.
Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?
a)
strongly acidic
b)
slightly acidic
c)
strongly basic
d)
slightly basic
2.
When dissolved in water, acids produce:
a)
bases
b)
salts
c)
hydrogen ions
d)
hydroxide ions
3.

Which of the following will conduct electricity? Select all that apply

a)

Acidic solutions

b)

Basic solutions

c)

Ionic solutions

d)

Neutral covalent solutions

4.

Which of the following are properties of acids but not bases? Select all that apply.

a)

Changes the color of an indicator

b)

Sour taste

c)

Reacts with metals to produce hydrogen gas

d)

Feels slippery

5.

An Arrhenius acid

a)

produces hydroxide ions in a solution

b)

produces hydrogen ions in a solution

c)

is a proton donor

d)

is a proton acceptor

6.

A Bronsted-Lowry base

a)

produces hydroxide ions in a solution

b)

produces hydrogen ions in a solution

c)

is a proton donor

d)

is a proton acceptor

7.

Which of the following statements is true concerning acids and bases?

a)

acids and bases don't react with each other

b)

acids mixed with bases neutralize each other

c)

acids mixed with bases make stronger bases

d)

acids mixed with bases make stronger acids

8.

pH is the measure of the concentration of ______.

a)

Acids

b)

OH- ion

c)

H+ ion

d)

Bases

9.

The esophagus is the tube that connects the mouth to the stomach. Heartburn occurs when some of the stomach juices flow backwards up the esophagus. To help relieve heartburn, a person should take medicine that is

a)

neutral

b)

basic

c)

acidic or basic.

d)

acidic

10.
In a neutralization reaction, what are the products of a reaction between an acid and a base?
a)
Another acid and base
b)
Carbon dioxide and a salt
c)
Water and a salt
d)
Either two acids or two bases
11.
Is the following compound an acid or a base? 
Ca(OH)2
a)
Acid
b)
Base
12.

What is the formula for sulfuric acid?

a)

H2S

b)

H2SO3

c)

H2SO2

d)

H2SO4

13.

What color does a base turn red litmus paper?

a)

Red

b)

Blue

14.

Which substance can act as either an acid or a base according to the Brønsted-Lowry definition?

a)

H3O+

b)

NH4+

c)

H2O

d)

HCl

15.
The graph shows how the pH of soil in a field changes over time.
At which point was the soil neutral? 
a)
A
b)
B
c)
C
d)
D
16.

An acid that ionizes completely in water to produce a higher concentration of hydrogen ion.  This statement is referring to.. 

a)

Acid

b)

Strong acid

c)

Weak acid

17.

True or false: bases are sometimes called alkaline.

a)

True

b)

False

18.

A solution has a pH of 7.0.  What would happen to the pH if OH ions were added?

a)
pH would go up
b)
pH would go down
c)
pH would stay the same
d)
None of these
19.

If the pH of a solution is 4.0, what is the pOH?

a)

4.0

b)

1.0 x 10 -4

c)

10.0

d)

cannot be determined from the information

20.

The pH of a solution is 8.43. What is the [H3O+]?

a)

3.7 x 10 -9

b)

1.0 x 10-8.43

c)

2.7 x 10-6

d)

1.0 x 10-14

21.

Find the pH of a solution with [OH-] = 8.41 x 10-4.

a)

3.08

b)

9.88

c)

10.92

d)

11.23

22.

What is the [OH-] if the [H+] is 1.0 x 10-3M?

a)

1.0 x 10-3 M

b)

1.0 x 10-14 M

c)

6.02 x 10-23 M

d)

1.0 x 10-11 M

23.

When you make a dilution, which of these values remains constant?

a)

The molarity (M)

b)

The total moles of solute

c)

The volume (V)

d)

The concentration

24.

As we dilute a solution.....

a)

The volume increases and the molarity (M) increases

b)

The volume increases and the molarity (M) decreases

c)

The volume decreases and the molarity (M) increases

d)

The volume decreases and the molarity (M) decreases

25.

How many mL of stock solution of 2.0M NaCl do you need to prepare 100. mL of 0.150M NaCl?

a)

7.5 mL

b)

15 mL

c)

1333 mL

d)

200 mL

26.

The term molar which is used to describe a solution's concentration, is written as?

a)

M

b)

mol

c)

g

d)

g/L

27.

Calculate the Molarity in a solution containing 40.0 g of NaCl dissolved in 500.0 ml of H2O.

a)

0.08 M

b)

12.5 M

c)

1.37 M

d)

0.74 M

28.

Molarity is ...

a)

grams of solute/deciliters of solvent.

b)

grams of solute/liters of solution.

c)

moles of solute/liters of solution.

d)

moles of solute/milliliters of solvent.

29.

A solution is made by dissolving 0.500 mole of NaCl in enough water to give a final volume of 400.0 mL. What is the molarity of the solution?

a)

0.10 M

b)

0.40 M

c)

1.25 M

d)

2.33 M

30.

How many grams of solute are dissolved in 125.0 mL of 5.00 M NaCl (MM = 58.45)?

a)

0.625 g NaCl

b)

625 g NaCl

c)

36.5 g NaCl

d)

0.04 mol NaCl

31.

What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO3 to a volume of 250. mL?

a)
15.9 M
b)
0.636 M
c)
0.642 M
d)
1.59 M
32.
Which sweet tea would you expect to taste the sweetest?
a)
1M
b)
3M
c)
3.1M
d)
2.5M
33.
How many mL of 10.8M HCl are required to make 100.0 mL of 3.00M acid?
a)
27.8 mL
b)
27.78 mL
c)
2.8 mL
d)
278 mL
34.

If I have 340. mL of a 0.500 M NaBr solution, what will the concentration be if I add 560. mL more water to it?

a)

0.188 M

b)

3.78 M

c)

0.389 M

d)

1.76 M

35.
When 20 grams of potassium chlorate, KClO3, is dissolved in 100 grams of water at 80 ºC, the solution can be correctly described as:
a)
supersaturated
b)
saturated
c)
unsaturated
36.

How much water must be added to prepare a 0.200M dilute solution KBr? Your stock solution is 100. mL of 1.50M KBr.

a)

175 mL

b)

650. mL

c)

750. mL

d)

13.3 mL

37.

Complete the following reaction:

HCl + Mg(OH)2 -->

a)

MgCl2 + H2O

b)

Mg +H2O

c)

MgCl2 + H2

d)

MgCl2 + H2O + CO2

38.

Complete the following reaction:

H3PO4 + NaOH -->

a)

Na3PO4 + H2O

b)

Na +H2O

c)

Na3PO4 + H2

d)

Na3PO4 + H2O + CO2

39.

This solution is filled with:

a)

Weak Acid

b)

Strong Base

c)

Strong Acid

d)

Weak Base

40.

Both solutions have equal volumes of 30 mL. Which solution is more diluted?

a)

Solution X

b)

Solution Y

41.

Since "like dissolves like", water and oil are immiscible because

a)

Both are polar

b)

Oil is polar and water is nonpolar

c)

Both are nonpolar

d)

Oil is nonpolar and water is polar

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