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WorksheetsSolutions Acid and Bases
Total questions: 66
Worksheet time: 2hrs 12mins
Name
Class
Date
1.
Describe a solute.
a)
part of solution present in largest amount
b)
gets dissolved
c)
water
d)
surrounds and breaks apart
2.
__________ are made up of solutes and solvents.
a)
Solutions
b)
Suspensions
c)
Heterogeneous Mixtures
d)
Pure Substances
3.
When a solvent contains as much of the solute as it can hold, the solution is said to be
a)
supersaturated
b)
diluted
c)
saturated
d)
unsaturated
4.
What does it mean to dilute a solution?
a)
lower the concentration of solute per solvent
b)
increase the concentration of solute per solvent
5.
You can make a solution more concentrated by adding __________.
a)
solute
b)
solvent
c)
water
6.
What is able to dissolve other substances?
a)
Solute
b)
Salt
c)
Suspension
d)
Solvent
7.
If I dissolve sugar in water, what is the solute?
a)
Water
b)
Hydrogen
c)
Sugar
d)
Carbon
8.
If I dissolve carbon dioxide in water, what is my solvent?
a)
Carbon Dioxide
b)
There is no solvent
c)
Oxygen
d)
Water
9.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-5
d)
1-20
10.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
11.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
12.
What is the only substance with a neutral pH of 7?
a)
Milk
b)
Orange Juice
c)
Water
d)
Blood
13.
Complete the sentence.
A substance that is more basic has a _____ pH than a substance that is acidic.
A substance that is more basic has a _____ pH than a substance that is acidic.
a)
lower
b)
higher
c)
the same
d)
none of the above
14.
In a test of pH levels, a baking soda has a pH of 9 and bleach has a pH of 12. What is true about there relationship?
a)
Both of the solution are Bases
b)
Both of the solution are Acids
c)
The Baking soda is an acid and the Bleach is a base
d)
The baking soda is a base and the Bleach is an Acid.
15.
A base is a substance
a)
That releases OH- ions when dissolved in water
b)
That releases H+ ions when dissolved in water
c)
Does not release any ions when dissolved in water
d)
None of the above
16.
On the pH scale higher numbers indicate
a)
acids
b)
bases
17.
If you have a substance with a pH of 7.1 it is a(n).....
a)
Acid
b)
base
18.
An acid
a)
is a substance that releases H+ ions when dissolved in water
b)
is a substance that does not release any ions when dissolved in water
c)
is a substance that releases OH- when dissolved in water
d)
releases an equal amount of OH- and H+ ions when dissolved in water
19.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
20.
Bleach is a strong base, what is the pH level of bleach?
a)
13
b)
14
c)
1
d)
2
21.
If the [H+] of a solution is 1 x 10-2 mol/L the pH is
a)
2
b)
12
c)
-2
d)
1
22.
If the pH of a solution is 5 the [H+] is
a)
1.0 x 105 M
b)
1.0 x 109 M
c)
5.0 x 101 M
d)
1.0 x 10-5 M
23.
If the pH of a solution is 5.6 the pOH is
a)
6.5
b)
12.4
c)
8.4
d)
5.6
24.
A pH and a pOH will add up to:
a)
0
b)
7
c)
14
d)
1.0 x 10-14
25.
if the [H+] of a solution is 1.0 x 10-2 mol/L the pH is
a)
2
b)
-2
c)
1
d)
12
26.
If the [H+] of a solution is 1 x 10-8 mol/L the [OH-] is
a)
1.0 x 10-6
b)
1.0 x 106
c)
1.0 x 10-8
d)
1.0 x 108
27.
If the [OH-] of a solution is 2.7 x 10-4 mol/L the pOH of the solution is
a)
10.44
b)
3.56
c)
1.00
d)
-4.43
28.
If the pH of a solution is 7 the solution is said to be
a)
Acidic
b)
Basic
c)
Neutral
d)
Tasty
29.
A solution with a [H+] of 9.4 x 10-5 mol/L is said to be
a)
Acidic
b)
Basic
c)
Neutral
d)
negative number, no solution.
30.
If the [H+] of a solution is 6.8 x 10-9 mol/L the pH is
a)
8.17
b)
8.2
c)
9.99
d)
8.62
31.
if the [H+] of a solution is 8.4 x 10-3 mol/L the pOH of the solution will be
a)
2.08
b)
11.92
c)
1.02
d)
12.98
32.
if a solution has a pOH of 5.2 the [OH-] of the solution is
a)
6 x 10 -6 M
b)
6.3 x 10 -6 M
c)
1.58 x 10-5 M
d)
2 x 10-5 M
33.
Limes have a [H+] of 1.3 x 10-2 mol/L. Their pOH is
a)
1.89
b)
12.11
c)
1.03
d)
12.97
34.
Bases will turn litmus paper __________, while acids will turn litmus paper __________.
a)
blue.....red
b)
red.....blue
c)
pink.........colourless
d)
colourless..........pink
35.
Litmus paper is an indicator of acids and bases, it turns red for bases.
a)
True
b)
false
36.
An indicator will ______________ when it is in contact with an acid or base
a)
Bubble
b)
Form a new substance
c)
Change color
d)
Stay the same color
37.
What is a substance that is one color in an acid and another color in a base?
a)
Oxidizer
b)
Indicator
38.
What color does litmus paper turn in the presence of an acid?
a)
Red
b)
Blue
39.
One benefit of litmus paper is that it...
a)
Tells you the pH of a substance
b)
It is inexpensive
c)
It connects to a computer
d)
You can make it with materials you have at home
40.
One benefit of Red Cabbage Juice Indicator is that it...
a)
Tells you the exact pH
b)
Is very accurate
c)
It is very expensive
d)
It can be made from materials you have at home
41.
One benefit of pH paper is that it...
a)
Tells you the pH of a substance
b)
Only tells you if a substance is an acid or a base
c)
It is very accurate
d)
It is expensive
42.
How many liters would you need to make a 1 M solution if you have 6 mol of Sodium Hydroxide?
a)
2
b)
3
c)
4
d)
6
43.
What is the molarity of 4 g of NaCl (MM=58.45) in 3,800 mL of solution?
a)
0.018 M
b)
0.0011 M
c)
1.052 M
d)
0.062 M
44.
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
45.
Find the molarity of 186.55 g of sucrose, C12H22O11 (MM = 342) in 250 mL of water.
a)
2.18 M
b)
0.746 M
c)
1.18 M
d)
0.545 M
46.
How many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of 125 mL?
a)
1074 mol
b)
0.069 mol
c)
1.07 mol
d)
62.7 mol
47.
How many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of 125 mL?
a)
1074 mol
b)
0.069 mol
c)
1.07 mol
d)
62.7 mol
48.
True or False? The higher the concentration of a solution the less solutes it has in it.
a)
True
b)
False
49.
How many grams of AgNO3 (MM = 169.87) are needed to prepare 0.125M solution in 250 mL of water?
a)
.03g
b)
0.5g
c)
5.3g
d)
84.9g
50.
Which of the following has the most NaCl (MM = 58.44)?
a)
100 mL of a 1.8 M solution
b)
50 mL of a 4.1 M solution
c)
9.35 grams
d)
1 mole
51.
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
52.
Calculate the molarity of the following solution: 1.0 mole of KCl in 750.0 mL of solution.
a)
0.750 M
b)
99 M
c)
1.3 M
d)
2.0 M
53.
What volume of 1.50 M KBr can be made from 15.6 mL of concentrated KBr with a molarity of 9.65 M?
a)
150. mL
b)
151 mL
c)
1.00 L
d)
100. mL
54.
What is the molarity of a solution made by adding 1.565 moles of PbNO3 to 500 mL?
a)
300. M
b)
31.3 M
c)
3.13 M
d)
1.56 M
55.
How many moles are needed to make 2.5 L of a 3.8 M solution?
a)
9.5 mol
b)
0.66 mol
c)
1.5 mol
d)
15 mol
56.
acid + base ₋>
a)
salt + hydrogen
b)
salt + water
c)
salt + carbon dioxide + water
d)
salt
57.
HCl + NaOH →
a)
NaH + ClOH
b)
NaCl + H2
c)
NaCl + H2O
d)
NaCl + Cl2
58.
What is the endpoint of a titration
a)
Where the amount of acid and base are balanced according to the equation
b)
Where there is no base
c)
At the end
59.
I am titrating 1M HCl with 1M NaOH. I have 25mL of HCl. How much NaOH will I need?
a)
2.5mL
b)
5mL
c)
25mL
d)
50mL
60.
what is the reading on this burette?
a)
4.40mL
b)
3.50mL
c)
3.60mL
d)
4.50mL
61.
I have 25mL of 1M HCl which neutralises 20mL of NaOH. What is the concentration of the NaOH?
a)
0.8 M
b)
1 M
c)
1.25 M
62.
Identify the products of the chemical equation
3 LiOH + H3PO4 →
3 LiOH + H3PO4 →
a)
Li3PO4 + 3 H2O
b)
LiPO4 + 3 H2O
c)
Li(PO4)3 + 3 H2O
d)
BOY + La + N2
63.
A 50.0 mL sample of Ca(OH)2 is neutralized by 300.0 mL of HCl solution with a pH of 1.3. Calculate the molarity of the Ca(OH)2 solution.
a)
1.0 M
b)
0.50 M
c)
0.15 M
d)
0.30 M
64.
How many moles of Ca(OH)2 are needed to neutralize three moles of HCl?
a)
8
b)
1.5
c)
6
d)
3
65.
What does pH measure?
a)
Amount of Oxygen Ions
b)
Amount of Hydrogen Ions
c)
The amount of salt in a solution
d)
The density
66.
Which of the following is a conjugate acid/base pair?
a)
HCl/OCl-
b)
H2SO4/SO42-
c)
NH4+/NH3
d)
H3O+/OH-
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