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Chemistry Unit 13: Acids, Bases, and Solutions

Total questions: 40

Worksheet time: 3hrs 20mins

Name
Class
Date
1.

Molarity is measured in _____.

a)

moles per gram

b)

moles per liter

c)

moles per milliliter

d)

grams per liter

2.

The _____ is the thing being dissolved.

a)

solute

b)

solvent

3.

What is a solvent?

a)

The substance that does the dissolving in a solution.

b)

The substance that is being dissolved in a solution.

c)

The mixing of different substances.

d)

The process in which neutral molecules lose or gain electrons.

4.
How many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of 125 mL?
a)

1070 mol

b)

0.0690 mol

c)
1.07 mol
d)
62.7 mol
5.

What are the units of molarity?

a)

M

b)

m

c)

g

d)

mL

6.

What is the molarity of a solution that contains 3 moles of hydrochloric acid in 3 L of water?

a)

3 M

b)

1 M

c)

6 M

d)

9 M

7.

What is the molarity of a solution that contains 4.0 grams of sodium chloride in 3,800 mL of solution?

a)
0.018 M
b)
0.018 mol
c)

1.05 M

d)

1.05 mol

8.

When no more solute dissolves the solution is _________

a)

supersaturated

b)

unsaturated

c)

saturated

d)

supercalifragilisticexpialidocious

9.
In the above picture, a powder is about to be poured into the liquid. Which of the following should be done to make this powder dissolve faster?

a)
stir the powder in the liquid
b)
freeze the mixture
c)
add more powder to the liquid
d)
store the mixture in a dark place
10.

When a Koolaid mix in water is dark in color and very sweet it is a __________ solution.

a)
concentrated 
b)

diluted

11.
The concentration of a mixture can be increased in which of the following ways?
a)
Heating the mixture
b)
Adding more water “solvent”
c)
Adding more powder “solute”
d)
Stirring the mixture
12.
How many grams of K2Cr2O7, are soluble in 100 g of water at 95 ºC?
a)
83 grams
b)
75 grams
c)
40 grams
d)
12 grams
13.
Which solute is the most soluble at 10 ⁰C?
a)
KI
b)
KClO3
c)
NH4Cl
d)
NH3
14.
Which solute is the least soluble at 90 ⁰C?
a)
SO2
b)
KClO3
c)
KI
d)
HCl
15.
How does a solution become supersaturated?
a)
dissolve lots of solvent in it.
b)
dissolve a little solute in it. 
c)
dissolve more solute than you should be able to. 
d)
dissolve a super amount of solvent in it. 
16.
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
17.
When 50 grams of KCl is dissolved in 100 grams of water at 50 ºC, the solution can be correctly described as:
a)
supersaturated
b)
unsaturated
c)
saturated
18.

You are given a small beaker of solution at room temp. You add a bit of solute to the solution and it dissolves. The solution was:

a)

saturated

b)

unsaturated

c)

concentrated

d)

warm

19.

When a Koolaid mix in water is light in color and bland it is a __________ solution.

a)
concentrated 
b)

diluted

20.

pH + pOH =

a)

7

b)

14

c)

1.0 x 10-14

d)

-log (14)

21.

If the pH of a solution is 4, what is the pOH?

a)

4

b)

10

c)

1 x 10 -14

d)

cannot be determined from the information

22.

If the [H+] of a solution is 1 x 10-3 M, the pH is

a)

11.0

b)

-3.0

c)

3.0

d)

1.0

23.

If the pH of a solution is 8.0 the [H+] is

a)

1 x 106 M

b)

8 x 101 M

c)

1 x 108 M

d)

1 x 10-8 M

24.

If the [OH-] of a solution is 2.70 x 10-4 M, the pOH of the solution is

a)

10.423

b)

1.000

c)

3.569

d)

-4.438

25.

If a solution has a pH of 1 what is the pOH? Is it an acid or base? (Choose 2 answers)

a)

acid

b)

base

c)

13

d)

15

e)

neutral

26.

If the pH of a solution is 5.6, the pOH is

a)
6.5
b)
12.4
c)
8.4
d)
5.6
27.

A neutralization reaction produces

a)
water & salt
b)
water
c)
salt
d)
water & carbon
28.

A type of chemical that forms solutions that taste sour, due to high concentrations of positive hydrogen ions

a)

acid

b)

base

c)

salt

d)

pH

29.

What is considered to be in the middle of the pH scale

a)

acidic

b)

neutral

c)

basic

d)

indicator

30.
Identify the salt in the following equation:
Zn(OH)2 + HNO3   ---> H2O  + Zn(NO3)2
a)
Zn(OH)2
b)
HNO3
c)
H2O
d)
Zn(NO3)2
31.

Complete the following reaction:

HCl + Mg(OH)2 -->

(Do not need to balance)

a)

MgCl2 + H2O

b)

Mg +H2O

c)

MgCl2 + H2

d)

MgCl2 + H2O + CO2

32.

Complete the following reaction:

H3PO4 + NaOH -->

(Do not need to balance)

a)

Na3PO4 + H2O

b)

Na +H2O

c)

Na3PO4 + H2

d)

Na3PO4 + H2O + CO2

33.

Complete the following reaction:

HNO3 + Ca(OH)2 -->

(Do not need to balance)

a)

Ca(NO3)2 + H2O

b)

Ca +H2O

c)

Ca(NO3)2 + H2

d)

Ca(NO3)2 + H2O + CO2

34.
What is the range of pH values in a basic solution?
a)
0-7
b)
7-14
c)
7
35.

A type of chemical that forms solutions that taste bitter, due to high concentrations of negative hydroxide ions

a)

acid

b)

base

c)

salt

d)

pH

36.

What is the range of pH values in an acidic solution?

a)
0-7
b)
7-14
c)
7
37.
H2SO3
a)
sulfuric acid
b)
hydrosulfuric acid
c)
sulfurous acid
d)
persulfuric acid
38.

Chlorous acid

a)
HClO3
b)
HClO2
c)
HClO
d)
HCl
39.

Nitrous acid

a)
H2NO3
b)
HNO3
c)
HNO2
d)
H2NO2
40.
HF
a)
flouric acid
b)
hydrofluoric acid
c)
fluorate acid
d)
hydrogen fluoridic acid

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