"Writing Balanced Equations Chem 10 Review Worksheet With Answers"

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Writing Balanced Equations CHEM 10 Review Worksheet
The equations supplied here are fairly simple and could be considered “Chem 10 level”. They are provided to assist your
review of some topics covered in Chp 3 of the Zumdahl textbook. An answer key is provided on the second page.
Writing Balanced Chemical Equations
Write balanced chemical equations for each of the following reactions:
1. Gaseous nitrogen dioxide reacts with water to produce nitric acid and gaseous nitrogen monoxide.
2. Rubidium metal (s) + water (l) → rubidium hydroxide (aq) + hydrogen (g)
3. Iodine (s) + chlorine (g) → iodine trichloride (l)
4. Sodium bicarbonate when heated will form solid sodium carbonate, carbon dioxide and water vapor.
5. Magnesium acetate (aq) + ammonium sulfide (aq) → magnesium sulfide (s) + ammonium acetate (aq).
6. C
H
(l) + oxygen (g) → carbon dioxide (g) + water (l)
[C
H
is named hexane]
6
14
6
14
7. Iron(III) oxide (s) + carbon (s) → iron (s) + carbon dioxide (g)
8. Potassium carbonate (aq) + nitric acid (aq) → potassium nitrate (aq) + carbon dioxide (g) + water (l)
9. Ammonium nitrite (s) → nitrogen (g) + water (l)
10. Gaseous sulfur dioxide reacts with oxygen forming gaseous sulfur trioxide.
11. Cobalt(III) bromide (aq) reacts with pure chlorine forming pure bromine and cobalt(III) chloride (aq).
12. Silver (s) + S
(s) → silver sulfide (s)
[S
is a naturally occurring form of sulfur]
8
8
13. Ammonia (g) + oxygen (g) → nitrogen monoxide (g) + water (l)
14. Aqueous barium hydroxide reacts with phosphoric acid forming water and solid barium phosphate.
15. Aluminum (s) + copper(II) sulfate (aq) → aluminum sulfate (aq) + copper (s)
16. When heated, solid lithium chlorate decomposes to produce solid lithium chloride and oxygen gas.
17. Benzene liquid (C
H
) burns in oxygen to form carbon dioxide and water (and heat).
6
6
18. Silicon dioxide (s) + hydrofluoric acid (aq) → silicon tetrafluoride (g) + water (l)
Writing Balanced Equations CHEM 10 Review Worksheet
The equations supplied here are fairly simple and could be considered “Chem 10 level”. They are provided to assist your
review of some topics covered in Chp 3 of the Zumdahl textbook. An answer key is provided on the second page.
Writing Balanced Chemical Equations
Write balanced chemical equations for each of the following reactions:
1. Gaseous nitrogen dioxide reacts with water to produce nitric acid and gaseous nitrogen monoxide.
2. Rubidium metal (s) + water (l) → rubidium hydroxide (aq) + hydrogen (g)
3. Iodine (s) + chlorine (g) → iodine trichloride (l)
4. Sodium bicarbonate when heated will form solid sodium carbonate, carbon dioxide and water vapor.
5. Magnesium acetate (aq) + ammonium sulfide (aq) → magnesium sulfide (s) + ammonium acetate (aq).
6. C
H
(l) + oxygen (g) → carbon dioxide (g) + water (l)
[C
H
is named hexane]
6
14
6
14
7. Iron(III) oxide (s) + carbon (s) → iron (s) + carbon dioxide (g)
8. Potassium carbonate (aq) + nitric acid (aq) → potassium nitrate (aq) + carbon dioxide (g) + water (l)
9. Ammonium nitrite (s) → nitrogen (g) + water (l)
10. Gaseous sulfur dioxide reacts with oxygen forming gaseous sulfur trioxide.
11. Cobalt(III) bromide (aq) reacts with pure chlorine forming pure bromine and cobalt(III) chloride (aq).
12. Silver (s) + S
(s) → silver sulfide (s)
[S
is a naturally occurring form of sulfur]
8
8
13. Ammonia (g) + oxygen (g) → nitrogen monoxide (g) + water (l)
14. Aqueous barium hydroxide reacts with phosphoric acid forming water and solid barium phosphate.
15. Aluminum (s) + copper(II) sulfate (aq) → aluminum sulfate (aq) + copper (s)
16. When heated, solid lithium chlorate decomposes to produce solid lithium chloride and oxygen gas.
17. Benzene liquid (C
H
) burns in oxygen to form carbon dioxide and water (and heat).
6
6
18. Silicon dioxide (s) + hydrofluoric acid (aq) → silicon tetrafluoride (g) + water (l)
Answer Key
1. 3 NO
(g) + H
O (l) → 2 HNO
(aq) + NO (g)
2
2
3
2. 2 Rb (s) + 2 H
O (l) → 2 RbOH (aq) + H
(g)
2
2
3. I
(s) + 3 Cl
(g) → 2 ICl
(l)
2
2
3
4. 2 NaHCO
(s) → Na
CO
(s) + CO
(g) + H
O (g)
3
2
3
2
2
5. Mg(C
H
O
)
(aq) + (NH
)
S (aq) → MgS (s) + 2 NH
C
H
O
(aq)
2
3
2
2
4
2
4
2
3
2
6. 2 C
H
(g) + 19 O
(g) → 12 CO
(g) + 14 H
O (l)
6
14
2
2
2
7. 2 Fe
O
(s) + 3 C (s) → 4 Fe (s) + 3 CO
(g)
2
3
2
8. K
CO
(aq) + 2 HNO
(aq) → 2 KNO
(aq) + CO
(g) + H
O (l)
2
3
3
3
2
2
9. NH
NO
(s) → N
(g) + 2 H
O (l)
4
2
2
2
10. 2 SO
(g) + O
(g) → 2 SO
(g)
2
2
3
11. 2 CoBr
(aq) + 3 Cl
(g) → 3 Br
(l) + 2 CoCl
(aq)
3
2
2
3
12. 16 Ag (s) + S
(s) → 8 Ag
S (s)
8
2
13. 4 NH
(g) + 5 O
(g) → 4 NO (g) + 6 H
O (l)
3
2
2
14. 3 Ba(OH)
(aq) + 2 H
PO
(aq) → 6 H
O (l) + Ba
(PO
)
(s)
2
3
4
2
3
4
2
15. 2 Al (s) + 3 CuSO
(aq) → Al
(SO
)
(aq) + 3 Cu (s)
4
2
4
3
16. 2 LiClO
(s) → 2 LiCl (s) + 3 O
(g)
3
2
17. 2 C
H
(g) + 15 O
(g) → 12 CO
(g) + 6 H
O (l)
6
6
2
2
2
18. SiO
(s) + 4 HF (aq) → SiF
(g) + 2 H
O (l)
2
4
2
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