Transcript You are given an aqueous solution that contains a Co 2
Tro IC3 8.1
The balanced equation of 4Al + 3O
2 →
be interpreted by saying that 1 mol of Al: 2Al
2
O
3
can 1. Reacts with 3 mol of O 2 2. Produces 1 mol of Al 2 O 3 3. Produces 0
.
5 mol Al 2 O 3 4. Reacts with 2 mol of O 2 5. Cannot react with O 2
Tro IC3 8.1
The balanced equation of 4Al + 3O 2 → be interpreted by saying that 1 mol of Al: 2Al
2
O
3
can 1. Reacts with 3 mol of O 2 2. Produces 1 mol of Al 2 O 3 3. Produces 0
.
5 mol Al 2 O 3 4. Reacts with 2 mol of O 2 5. Cannot react with O 2
Tro IC3 8.2
How many moles of oxygen are needed to produce 6 mol of Fe
2
O
3
4Fe + 3O
2
→ in the following equation: 2Fe
2
O
3
?
1. 3 2. 1 3. 6 4. 9 5. 18
Tro IC3 8.2
How many moles of oxygen are needed to produce 6 mol of Fe
2
O
3
4Fe + 3O
2
→ in the following equation: 2Fe
2
O
3
?
1. 3 2. 1 3. 6 4. 9 5. 18
Tro IC3 8.3
How many moles of gaseous oxygen are required for the complete combustion of 4.0 mol of butane (C
4
H
10
)?
1. 4
.
0 2. 8
.
0 3. 13 4. 26 5. 52
Tro IC3 8.3
How many moles of gaseous oxygen are required for the complete combustion of 4.0 mol of butane (C
4
H
10
)?
1. 4.0
2. 8.0
3. 13 4. 26 5. 52
8.4
How many grams of oxygen are required to completely burn 5
.
90 g of C
3
H
8
unbalanced equation: C
3
H
8
(
g
) + O
2
(
g
) → in the following CO
2
(
g
) + H
2
O(
g
)?
1. 5
.
90 g 2. 21
.
4 g 3. 4
.
28 g 4. 10
.
7 g 5. 29
.
5 g Tro IC3
8.4
How many grams of oxygen are required to completely burn 5
.
90 g of C
3
H
8
unbalanced equation: C
3
H
8
(
g
) + O
2
(
g
) → in the following CO
2
(
g
) + H
2
O(
g
)?
1. 5
.
90 g 2. 21
.
4 g 3. 4
.
28 g 4. 10
.
7 g 5. 29
.
5 g Tro IC3
8.5
How many grams of aluminum sulfate are produced from 2
.
67 mol sulfuric acid in the following unbalanced equation: Al
2
O
3
(
s
) + H
2
SO
4
(
aq
) → Al
2
(SO
4
)
3
(
aq
) + H
2
O(
l
)?
1. 305 g 2. 457 g 3. 272 g 4. 914 g 5. 342 g Tro IC3
8.5
How many grams of aluminum sulfate are produced from 2
.
67 mol sulfuric acid in the following unbalanced equation: Al
2
O
3
(
s
) + H
2
SO
4
(
aq
) → Al
2
(SO
4
)
3
(
aq
) + H
2
O(
l
)?
1. 305 g 2. 457 g 3. 272 g 4. 914 g 5. 342 g Tro IC3
8.6
How many moles of phosphorus are required to produce 15
.
5 g P
4
O
6
4P(
s
) + 3O
2
(
g
) → in the following equation: P
4
O
6
(
s
)?
1. 34
.
9 mol 2. 0
.
0703 mol 3. 4
.
00 mol 4. 2
.
18 mol 5. 0
.
282 mol Tro IC3
8.6
How many moles of phosphorus are required to produce 15
.
5 g P
4
O
6
4P(
s
) + 3O
2
(
g
) → in the following equation: P
4
O
6
(
s
)?
1. 34
.
9 mol 2. 0
.
0703 mol 3. 4
.
00 mol 4. 2
.
18 mol 5. 0
.
282 mol Tro IC3
Tro IC3 8.7
How many moles of oxygen gas are produced from the following decomposition of 3
.
0 mol of Al
2
O
3
, assuming a 85% yield: 2Al
2
O
3
→ 4Al + 3O
2
?
1. 4
.
5 mol 2. 3
.
8 mol 3. 5
.
3 mol 4. 3
.
0 mol 5. 4
.
2 mol
Tro IC3 8.7
How many moles of oxygen gas are produced from the following decomposition of 3
.
0 mol of Al
2
O
3
, assuming a 85% yield: 2Al
2
O
3
→ 4Al + 3O
2
?
1. 4
.
5 mol 2. 3
.
8 mol 3. 5
.
3 mol 4. 3
.
0 mol 5. 4
.
2 mol
8.8
How many kg of methane (CH 4 ) are produced from 25
.
0 kg of hydrogen in the following catalytic methanation: 3H
2
+ CO → CH
4
+ H
2
O?
1. 115 kg 2. 74
.
3 kg 3. 134 kg 4. 25
.
0 kg 5. 66
.
2 kg Tro IC3
8.8
How many kg of methane (CH 4 ) are produced from 25
.
0 kg of hydrogen in the following catalytic methanation: 3H
2
+ CO → CH
4
+ H
2
O?
1. 115 kg 2. 74
.
3 kg 3. 134 kg 4. 25
.
0 kg 5. 66
.
2 kg Tro IC3
Tro IC3 8.9
How many moles of water are produced from the combustion of 3
.
5 mol of hydrogen and 5
.
2 mol of oxygen?
1. 7
.
0 mol 2. 5
.
2 mol 3. 3
.
5 mol 4. 10
.
mol 5. 1
.
8 mol
Tro IC3 8.9
How many moles of water are produced from the combustion of 3
.
5 mol of hydrogen and 5
.
2 mol of oxygen?
1. 7
.
0 mol 2. 5
.
2 mol 3. 3
.
5 mol 4. 10
.
mol 5. 1
.
8 mol
8.10
How many grams of NO are produced from the oxidation of 14
.
5 g of NH
3
following equation: 4NH
3
by 12
.
2 g of O
2
+ 5O
2
→ in the 4NO + 6H
2
O?
1. 0
.
305 g 2. 25
.
5 g 3. 18
.
3 g 4. 9
.
15 g 5. 0
.
851 g Tro IC3
8.10
How many grams of NO are produced from the oxidation of 14
.
5 g of NH
3
following equation: 4NH
3
by 12
.
2 g of O
2
+ 5O
2
→ in the 4NO + 6H
2
O?
1. 0
.
305 g 2. 25
.
5 g 3. 18
.
3 g 4. 9
.
15 g 5. 0
.
851 g Tro IC3
8.11
How many grams of the excess reagent are left over after the reaction of 4
.
36 g of Al and 8
.
50 g HCl in the following unbalanced equation: Al + HCl → AlCl
3
+ H
2
?
1. 2
.
26 g 2. 4
.
14 g 3. 2
.
3 g 4. 21
.
5 g 5. 10
.
4 g Tro IC3
8.11
How many grams of the excess reagent are left over after the reaction of 4
.
36 g of Al and 8
.
50 g HCl in the following unbalanced equation: Al + HCl → AlCl
3
+ H
2
?
1. 2
.
26 g 2. 4
.
14 g 3. 2
.
3 g 4. 21
.
5 g 5. 10
.
4 g Tro IC3
8.12
How many molecules of water are produced from the combustion of 2
.
56 mol of octane in the following equation: 2C
8
H
18
+ 25O
2
→ 16CO
2
+ 18H
2
O?
1. 1
.
08 x 10
25
2. 2
.
77 x 10
25
3. 2
.
56 x 10
25
4. 1
.
39 x 10
25
5. 6
.
02 x 10
23
Tro IC3
8.12
How many molecules of water are produced from the combustion of 2
.
56 mol of octane in the following equation: 2C
8
H
18
+ 25O
2
→ 16CO
2
+ 18H
2
O?
1. 1
.
08 x 10
25
2. 2
.
77 x 10
25
3. 2
.
56 x 10
25
4. 1
.
39 x 10
25
5. 6
.
02 x 10
23
Tro IC3
8.13
How many molecules of oxygen are produced from the decomposition of 8
.
75 g of hydrogen peroxide in the following equation: 2H
2
O
2
→ 2H
2
+ O
2
?
1. 8
.
75 x 10
24
2. 7
.
74 x 10
22
3. 1
.
55 x 10
22
4. 5
.
27 x 10
24
5. 6
.
02 x 10
23
Tro IC3
8.13
How many molecules of oxygen are produced from the decomposition of 8
.
75 g of hydrogen peroxide in the following equation: 2H
2
O
2
→ 2H
2
+ O
2
?
1. 8
.
75 x 10
24
2. 7
.
74 x 10
22
3. 1
.
55 x 10
22
4. 5
.
27 x 10
24
5. 6
.
02 x 10
23
Tro IC3
8.14
How many molecules of ammonia are produced from 7
.
54 x 10
25
molecules of hydrogen in the following equation: 3H
2
+ N
2 →
2NH
3
?
1. 2 molecules 2. 7
.
54 x 10
25
molecules 3. 5
.
03 x 10
25
molecules 4. 1
.
51 x 10
26
molecules 5. 6
.
02 x 10
23
molecules Tro IC3
8.14
How many molecules of ammonia are produced from 7
.
54 x 10
25
molecules of hydrogen in the following equation: 3H
2
+ N
2 →
2NH
3
?
1. 2 molecules 2. 7
.
54 x 10
25
molecules 3. 5
.
03 x 10
25
molecules 4. 1
.
51 x 10
26
molecules 5. 6
.
02 x 10
23
molecules Tro IC3
8.15
How many molecules of CO
2
are produced from the combustion of 2 molecules of C
8
H
18
and 5 molecules of O
2
? (Hint: This is a tricky question.) 1. 1
.
93 x 10
24
molecules 2. 16 molecules 3. 9
.
63 x 10
24
molecules 4. 3 molecules 5. 3
.
2 x 10
24
molecules Tro IC3
8.15
How many molecules of CO
2
are produced from the combustion of 2 molecules of C
8
H
18
and 5 molecules of O
2
? (Hint: This is a tricky question.) 1. 1
.
93 x 10
24
molecules 2. 16 molecules 3. 9
.
63 x 10
24
molecules 4. 3 molecules 5. 3
.
2 x 10
24
molecules Tro IC3
8.16
What is the theoretical yield of acetic acid when 22
.
5 g of methanol reacts with 32
.
0 g of carbon monoxide in the following equation: CH
3
OH + CO → HC
2
H
3
O
2
?
1. 24
.
2 g 2. 32
.
0 g 3. 42
.
2 g 4. 68
.
6 g 5. 84
.
4 g Tro IC3
8.16
What is the theoretical yield of acetic acid when 22
.
5 g of methanol reacts with 32
.
0 g of carbon monoxide in the following equation: CH
3
OH + CO → HC
2
H
3
O
2
?
1. 24
.
2 g 2. 32
.
0 g 3. 42
.
2 g 4. 68
.
6 g 5. 84
.
4 g Tro IC3
8.17
What is the theoretical yield of SO
3
from the combustion of 3
.
00 mol of S and 6
.
00 mol of O
2
?
1. 3
.
00 g 2. 320
.
g 3. 2
.
00 g 4. 4
.
00 g 5. 240
.
g Tro IC3
8.17
What is the theoretical yield of SO
3
from the combustion of 3
.
00 mol of S and 6
.
00 mol of O
2
?
1. 3
.
00 g 2. 320
.
g 3. 2
.
00 g 4. 4
.
00 g 5. 240
.
g Tro IC3
8.18
What is the theoretical yield of MgO from the combustion of 5
.
25 x 10
23
atoms of Mg and 4
.
69 x 10
23
molecules of O
2
? 1. 35
.
1 2. 2
.
17 x 10
25
g g 3. 31
.
4 4. 3
.
78 x 10
25
g g 5. 62
.
8 g Tro IC3
8.18
What is the theoretical yield of MgO from the combustion of 5
.
25 x 10
23
atoms of Mg and 4
.
69 x 10
23
molecules of O
2
? 1. 35
.
1 2. 2
.
17 x 10
25
g g 3. 31
.
4 4. 3
.
78 x 10
25
g g 5. 62
.
8 g Tro IC3
8.19
Which reactant is in excess from the reaction of 35
.
0 g of hydrogen with 276 g of oxygen to form water?
1. H 2. O 3. O
2
4. H
2
5. H
2
O Tro IC3
8.19
Which reactant is in excess from the reaction of 35
.
0 g of hydrogen with 276 g of oxygen to form water?
1. H 2. O 3. O
2
4. H
2
5. H
2
O Tro IC3
8.20
Which of the following statements is NOT correct about the limiting reactant in a reaction?
1. It has the lowest mass.
2. Its coefficient in the balanced equation is the smallest one.
3. It has the highest mass.
4.
It doesn’t react completely.
5. All of the above Tro IC3
8.20
Which of the following statements is NOT correct about the limiting reactant in a reaction?
1. It has the lowest mass.
2. Its coefficient in the balanced equation is the smallest one.
3. It has the highest mass.
4.
It doesn’t react completely.
5. All of the above Tro IC3
8.21
In the combustion of a sample of methane, the theoretical yield is 28
.
9 g CO
2 .
When a chemistry student performed the experiment, the yield was 26
.
4 g CO
2
. What is the percent yield of their reaction by the student?
1. 100
.
% 2. 91
.
3 % 3. 109 % 4. 85
.
2 % 5. 55
.
9 % Tro IC3
8.21
In the combustion of a sample of methane, the theoretical yield is 28
.
9 g CO
2 .
When a chemistry student performed the experiment, the yield was 26
.
4 g CO
2
. What is the percent yield of their reaction by the student?
1. 100
.
% 2. 91
.
3 % 3. 109 % 4. 85
.
2 % 5. 55
.
9 % Tro IC3
8.22
An experiment had a percent yield of 91
.
8% and a calculated theoretical yield of 28
.
2 g. How many grams were actually produced? 1. 25
.
9 g 2. 2
.
50 g 3. 92
.
0 g 4. 28
.
5 g 5. 30
.
7 g Tro IC3
8.22
An experiment had a percent yield of 91
.
8% and a calculated theoretical yield of 28
.
2 g. How many grams were actually produced? 1. 25
.
9 g 2. 2
.
50 g 3. 92
.
0 g 4. 28
.
5 g 5. 30
.
7 g Tro IC3
8.23
What is the limiting reactant for the reaction between 18
.
2 g of K and 8
.
38 g of water in the following unbalanced reaction: K + H
2
O
→
KOH + H
2
? 1. K 2. H
2
O 3. KOH 4. H
2
5. Both are used up at the same time.
Tro IC3
8.23
What is the limiting reactant for the reaction between 18
.
2 g of K and 8
.
38 g of water in the following unbalanced reaction: K + H
2
O
→
KOH + H
2
?
1. K 2. H
2
O 3. KOH 4. H
2
5. Both are used up at the same time.
Tro IC3
8.24
5
.
0 kg of hydrogen is reacted with 31 kg of oxygen. The experiment yields 28 kg of water. Calculate the percent yield of the reaction.
1. 40
.
% 2. 63 % 3. 80
.
% 4. 90
.
% 5. 161% Tro IC3
8.24
5
.
0 kg of hydrogen is reacted with 31 kg of oxygen. The experiment yields 28 kg of water. Calculate the percent yield of the reaction.
1. 40
.
% 2. 63 % 3. 80
.
% 4. 90
.
% 5. 161% Tro IC3
8.25
4
.
25 mol of Cl
2
are reacted with 1
.
49 mol NaOH. 12
.
5 g of NaClO
3
are produced. Calculate the percent yield of the following reaction: 3Cl
2
+ 6 NaOH → 5 NaCl + NaClO
3
+ 3H
2
O.
1. 28
.
1% 2. 47
.
3% 3. 79
.
9% 4. 82
.
8% 5. 91
.
2% Tro IC3
8.25
4
.
25 mol of Cl
2
are reacted with 1
.
49 mol NaOH. 12
.
5 g of NaClO
3
are produced. Calculate the percent yield of the following reaction: 3Cl
2
+ 6 NaOH → 5 NaCl + NaClO
3
+ 3H
2
O.
1. 28
.
1% 2. 47
.
3% 3. 79
.
9% 4. 82
.
8% 5. 91
.
2% Tro IC3