CHEM 110 (BEAMER)
PREDICTING PRODUCTS 6 – ALL, MIXED
PW41B
Last Name
Do Date
First Name
Section
M
T
W
R
PW41B: Predicting Products 6 – All, Mixed – Answer Key
General Information

Do Date: W (4/13)

You will need” Notes-46, Notes-47, Notes-48, Notes-50, and Notes-51

You will need: Periodic Table; Appendix 8 (Full List of Polyatomic Ions); Appendix 9 (Solubility Rules); and Appendix 10 (Activity “Top Dog” Series)
1)
Question Prompt 1
PREDICT THE PRODUCTS

You will be given a prompt in word form.

From the prompt, you must predict the products and write the balanced equation.

Indicate the state of all substances in the reaction as a subscript: (s), (l), (g), (aq)

If no reaction occurs between the two reactants, cross out your work, write NR, and circle it!

The types of equations are randomly mixed. You will have to determine the type of reaction based upon the reactants:
COMB = Combination Reaction
DR = Double Replacement Reaction
DEC = Decomposition Reaction
HC = Hydrocarbon Combustion Reaction
SR = Single Replacement Reaction

I will give you the chemical formulas for any hydrocarbons that you may need.
Page 1 of 5
CHEM 110 (BEAMER)
PREDICTING PRODUCTS 6 – ALL, MIXED
EX)
Sodium metal is added to chlorine gas.
ANS)
Sodium metal is added to chlorine gas.
Type:
1)
COMB
PW41B
Na(s) + Cl2(g)  NaCl(s)
Aluminum metal is added to a solution of zinc nitrate.
Type:
SR
Al(s) + Zn(NO3)2(g)

AlCl3(aq) + Zn(s)
Explanation to Question 1










The reactants are an “element” and a “salt” = Single Replacement Reaction
See “Single Replacement Reaction” notes: Notes-51
The “homewrecker” is a metal “aluminum”
“Metal” will try to replace “metal”
Go to Appendix 10
Aluminum is higher up than Zinc on Appendix 10. This means that “aluminum wins” and zinc is “kicked out” in its element form.
Since aluminum and zinc trade places, the new names are “aluminum chloride” and “zinc” metal.
Write the chemical formulas.
Since one of the reactants was “aqueous,” you have to check the solubility table to see if the salt is soluble. (It is)
Zinc in its element form is a solid (memorized).
Page 2 of 5
CHEM 110 (BEAMER)
2)
PREDICTING PRODUCTS 6 – ALL, MIXED
PW41B
Ethanol liquid (C2H6O) is burned in the presence of a very limited oxygen gas supply.
Type:
HC
VL
C2 H6 O(l) + O2(g)
∆
→
H2 O(g) + C(s)
Explanation to Question 2



The reactants are an “hydrocarbon” – a substance that contains “hydrogen and carbon” – and “oxygen gas.”
The presence of a hydrocarbon should scream “hydrocarbon combustion reaction.”
See “hydrocarbon combustion” rules: Notes-48.
3)
A solution of zinc(II) nitrate is added to a solution of sodium sulfide.
Type:
DR
Zn(NO3)2(g)
+
Na2S(aq)

2 NaNO3(aq) + ZnS(s)
Explanation to Question 3










The reactants are “two salts” = Double Replacement Reaction
See “Double Replacement Reaction” notes: Notes-50
Name the
“Metal” will try to replace “metal”
Go to Appendix 10
Aluminum is higher up than Zinc on Appendix 10. This means that “aluminum wins” and zinc is “kicked out” in its element form.
Since aluminum and zinc trade places, the new names are “aluminum chloride” and “zinc” metal.
Write the chemical formulas.
Since one of the reactants was “aqueous,” you have to check the solubility table to see if the salt is soluble. (It is)
Zinc in its element form is a solid (memorized).
Page 3 of 5
CHEM 110 (BEAMER)
4)
PREDICTING PRODUCTS 6 – ALL, MIXED
PW41B
Aluminum metal is allowed to react with oxygen gas.
Type:
5)
Carbonic acid sits in a beaker at room temperature.
Type:
6)
Hydrocyanic acid HCN(aq), is added to a solution of lye (sodium hydroxide).
Type:
7)
A solution of sodium chromate is added to a solution of plumbous nitrate – lead(II) nitrate.
Type:
8)
Chlorine gas is bubbled through a solution of potassium fluoride.
Type:
Page 4 of 5
CHEM 110 (BEAMER)
9)
PREDICTING PRODUCTS 6 – ALL, MIXED
PW41B
Aluminum metal is added to a solution of nickel(II) chloride.
Type:
10)
A sample of solid lead(II) hydrogen carbonate is heated strongly.
Type:
11)
Bromine liquid is added to a solution of sodium chloride.
Type:
12)
Fluorine gas reacts with sodium metal.
Type:
13)
A solution of sodium chloride is added to a solution of iron(II) sulfate.
Type:
Page 5 of 5