Notes on Chemistry

Practice Set- Balancing Reactions
Section I - Place the appropriate coefficient on the line in front of each species to balance each equation and then under each equation identify the reaction type.
1. ____ Cu +_______Cl2 ® _________ CuCl
2. _____ H2O ® ______ H2 + _______ O2
3.______ KBr + _______ AgNO3 ® ______ KNO3 + _______ AgBr
4. ______ CH4 + _______O2 ® ________ CO2 + ________ H2O
5._______ Zn + _______ HCl ® ________ H2 + _______ ZnCl2
6. _____Fe + ______ H2O ® _______ Fe3O4 + _______ H2
7.______ AlBr3 + _______ Cl2 ® _______ AlCl3 + ________ Br2
8.______K2CO3 + _____ H3PO4 ® _________ H2CO3 + _______K3PO4
9.______ Al + ______ Pb(NO3)2 ® _______ Al(NO3)3 + ______ Pb
10.____ P + _____ O2 ® _______P2O5
Section II - Predict the product(s) and balance the chemical equation
1._______ C6H6 + ______ O2 ®
2._____ Pb + _______ AgNO3 ®
3.______ Ca + ______ O2 ®
4. ______ Li2SO4 + _______ BaCl2 ®
5.______Sr3N2 ®
Section III - On a separate sheet of paper, write a balanced equation for the following reactions and classify the type of reaction.
a. Aluminum metal reacts with oxygen (in the air) to form aluminum oxide.
b. Sodium oxide reacts with carbon dioxide to form sodium carbonate.
c. Calcium metal reacts with water to form calcium hydroxide and hydrogen gas.
d. Potassium nitrate decomposes to form potassium nitrite and oxygen.
e. Barium metal reacts with Iron (III) sulfate to produce barium sulfate and iron metal. f. Barium chloride reacts with sodium sulfate to produce barium sulfate and sodium chloride. g. Bismuth (III) oxide and zinc metal react to produce zinc (II) oxide and bismuth metal. h. Calcium metal reacts with phosphorus to produce calcium phosphide.
i. The combustion of decane forms water and carbon dioxide.
j. A solution of hydrochloric acid reacts with solid calcium bicarbonate to produce water, carbon dioxide, and calcium chloride. (Note: Carbonic acid decomposes to form the water and carbon dioxide)
k. A solution of acetic acid reacts with solid iron (II) hydroxide
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