Name

Name________________________
Date__________________
Section__________________

Chemistry 10
Instructor: M. Walker-Waugh
Fall 2002
LATEST EDITION modified on 10/23/02

Directions: Write the balanced equation for each of the following situations. SHOW ALL OF YOUR WORK ON ATTACHED PAGES, OR IT WILL NOT BE ACCEPTED. In addition, list the reaction type.

         Reaction Type
a.        Combination Reaction
b.        Decomposition Reaction
c.        Oxidation Reduction Reaction
d.        Precipitation Reaction
e.        Gaseous Reaction
f.         Neutralization Reaction
g.        Combustion Reaction

1. 5.00 x 10¹⁵ ng of potassium chlorate is heated to form potassium chloride and oxygen

2. 61.802 cg of nitrogen gas is reacted with 61.802 cg of hydrogen gas to form ammonia

3. 1.839 g of calcium hydroxide is reacted with a 25.0 mL of a 0.200 M sulfuric acid solution

4. 3.59 x 10² g strip of zinc is dropped into a test tube of containing excess hydrochloric acid

5. 2.11 mg of hydrogen peroxide decomposes in the presence of manganese dioxide to form water and oxygen

6. 8.924 g of copper(II) sulfate, pentahydrate is heated to drive off the water of hydration

7. A 4.32 ng sample of methane burns in excess oxygen

8. 5.92 g of sodium oxalate is reacted with 5.92 of calcium chloride

9. 13.33 cg of barium chloride is reacted with 135.2 mL of a 0.250 M sulfuric acid

10. 1.29 dag of sodium chloride is reacted with 25.0 dag of silver nitrate

11. 3.512 g of barium nitrate is reacted with EXCESS of sodium sulfate

12. 1.325 cg strip lithium reacts with 13.25 mg of magnesium nitrate

13. 6.9 g sodium nitride forms sodium and nitrogen gas

14. 3.577 Gg silver nitrate reacts with EXCESS of aluminum

15. 1.95 g iron(III) chloride and 25.00 mL of a 0.250 M sodium hydroxide solution

ANSWER SHEET

Part I: Balancing Equations

1. Balanced Equation
_____________________________________________________________________________________ Reaction Type______________________________________
Grams of Product (List the Product and the Amount)
_____________________________________________________________________________________

2. Balanced Equation _____________________________________________________________________________________ Reaction Type______________________________________
Grams of Product (List the Product and the Amount)
_____________________________________________________________________________________

3. Balanced Equation _____________________________________________________________________________________ Reaction Type______________________________________
Grams of Product (List the Product and the Amount)
_____________________________________________________________________________________

4. Balanced Equation _____________________________________________________________________________________ Reaction Type______________________________________
Grams of Product (List the Product and the Amount)
_____________________________________________________________________________________

5. Balanced Equation _____________________________________________________________________________________ Reaction Type______________________________________
Grams of Product (List the Product and the Amount)
_____________________________________________________________________________________

6. Balanced Equation _____________________________________________________________________________________ Reaction Type______________________________________
Grams of Product (List the Product and the Amount)
_____________________________________________________________________________________

7. Balanced Equation _____________________________________________________________________________________ Reaction Type______________________________________
Grams of Product (List the Product and the Amount)
_____________________________________________________________________________________

8. Balanced Equation _____________________________________________________________________________________ Reaction Type_______________________________________
Grams of Product (List the Product and the Amount)
_____________________________________________________________________________________

9. Balanced Equation _____________________________________________________________________________________ Reaction Type_______________________________________
Grams of Product (List the Product and the Amount)
_____________________________________________________________________________________

10. Balanced Equation _____________________________________________________________________________________ Reaction Type_______________________________________
Grams of Product (List the Product and the Amount)
_____________________________________________________________________________________

11. Balanced Equation _____________________________________________________________________________________ Reaction Type_______________________________________
Grams of Product (List the Product and the Amount)
_____________________________________________________________________________________

12. Balanced Equation _____________________________________________________________________________________ Reaction Type_______________________________________
Grams of Product (List the Product and the Amount)
_____________________________________________________________________________________

13. Balanced Equation _____________________________________________________________________________________ Reaction Type_______________________________________
Grams of Product (List the Product and the Amount)
_____________________________________________________________________________________

14. Balanced Equation _____________________________________________________________________________________ Reaction Type_______________________________________
Grams of Product (List the Product and the Amount)
_____________________________________________________________________________________

15. Balanced Equation _____________________________________________________________________________________ Reaction Type_______________________________________
Grams of Product (List the Product and the Amount)
_____________________________________________________________________________________

Additions listed below: AGAIN, SHOW ALL OF YOUR WORK ON ATTACHED PAGES, OR IT WILL
NOT BE ACCEPTED!!!!!

16. Write the ionic equation for the reaction of sodium hydroxide and phosphoric acid.

17. Write the net ionic equation for the reaction of barium carbonate and sulfuric acid.

18. Draw the Bohr structure for chlorine.

19. An atom with an electron configuration of 1s² 2s² 2p³ has how many valence electrons?

20. The _________ sublevel of an atom has a total of five orbitals.

21. What kind of bonding occurs in the compound potassium oxide.

ionic
nonpolar covalent
ionic polar single bond
covalent polar single bond
nonpolar ionic bond

22. Which of the following sublevels does not exit as written?

23. What is the formula of copper (II) sulfate, pentahydrate?

Cu₂(SO₄)₂ . 5 H₂O

Cu₂(SO₄) . 5 H₂O

CuSO₄ . 6 H₂O

CuSO₄. 5 H₂O

None of the above

24. What is the electron configuration for the nitride ion?

a. N⁵: 1s² 2s² 2p¹

b. N⁷: 1s²2s²2p³

c. N⁷: 1s² 2s² 2p⁵

d. N¹⁰: 1s² 2s² 2p⁶

e. None of the above

25. How many moles are in 20.0 g of sodium carbonate?

1.89 mol

212 mol

2.12 x 10³ mol

0.189 mol

18.9 mol

26. The percent of nitrogen in magnesium nitride is

27.8%

36.6%

16.1%

72.2%

63.4%

27. How many grams of aluminum metal will react with 0.0500 mole of oxygen gas according to the equation given:

Aluminum + Oxygen Ò Aluminum Oxide

1.35 g
1.01 g
4.32 g
2.06 g
1.80 g

28. For the equation given, how many grams of methane will react with 125 g of oxygen?

Methane (CH₄) burns to produce (you know)

39.1 g

19.5 g

15.6 g

31.3 g

62.5 g

29. When the reaction

aluminum + hydrochloric acid yields (you know)

is completed and balanced, this term appears in the balanced equation:

a. 3 HCl b. AlCl₂ c. 3 H₂ d. 4 Al e. none of the above

30. The density of alcohol is 0.780 g/mL. What is the mass of 20.0 mL of the alcohol?
              a.       25.6 g
              b.       0.0390 g|
              c.       15.6 g
              d.       20.8 g
              e.       19.2 g

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