1. Warm-Up Balance the following equations
When sulfur trioxide gas reacts with water, a solution of sulfuric acid (H2SO4) is formed
2) Copper metal reacts with hot concentrated sulfuric acid(H2SO4) solution to form aqueous copper (II) sulfate, and sulfur dioxide gas and water
C6H6 + O2  CO2 + H2O

2. Practice
Boron sulfide reacts violently with water to form dissolved boric acid (H3BO3) and hydrogen sulfide gas.
When liquid phosphorus trichloride is added to water, it reacts to form aqueous phosphorous acid (H3PO3) and aqueous hydrochloric acid (HCl).

3. Practice Writing Skeleton Equations
Solid Carbon reacts with Chlorine gas to form solid Carbon Tetrachloride
Solid Magnesium metal reacts with solid Zinc Carbonate to form solid Magnesium Carbonate and solid Zinc metal
Begin 3rd 1/24/01

4. Write and balance the following equations
When Isopropanol Alcohol (C3H8O) is burned in excess oxygen it produces carbon dioxide and water.
When aqueous sodium hydroxide reacts with sulfuric acid (H2SO4), aqueous sodium sulfate and water are produced. 4

5. Write out the Skeleton Equation and balance
Gaseous hydrogen reacts with gaseous chlorine to form aqueous hydrogen chloride
Carbon monoxide gas reacts with gaseous oxygen to form solid carbon dioxide

6. There are five general types of reactions: Synthesis Decomposition
Single Displacement
Double Displacement
Combustion

7. Synthesis reactions are also called combination reactions
A synthesis reaction occurs when two substances combine to form a new compound
Begin 5th

8. Synthesis Reaction Continued
The general form of a synthesis reaction is:
A B  AB
Substance “AB” is the only substance formed
Begin 4th 1/25/02

9. Examples of Synthesis Reactions
2 Mg (s) + O2 (g)  2 MgO (s)
Fe (s) + Cl2 (g)  FeCl2 (s)
U (s) + 3 F2 (g)  UF6 (g)

10. Practice Write the synthesis reaction for the following
The synthesis of KCl
The synthesis of barium fluoride

11. 2) Decomposition Reaction
In decomposition reactions, one substance breaks down (decomposes) into two or more simpler substances
Begin 1st

12. Decomposition Reactions Cont.
General Form of Decomposition Reaction (Binary):
AB  A + B

13. Examples of Decomposition Reactions
2 HgO (s)  2 Hg (l) + O2 (g)
Ca(OH)2  CaO (s) + H2O (g)
H2SO4 (aq)  SO3 (g) + H2O (l)

14. 2. The decomposition of Aluminum Oxide
1. The decomposition of ammonia (NH3)
2. The decomposition of Aluminum Oxide
3. The decomposition Iron (III) Chloride 14

15. Name/ Write the following compounds: Fe2O3 N2O5 Lithium Chloride
Warm-Up
Name/ Write the following compounds:
Fe2O3
N2O5
Lithium Chloride
Copper (I) Sulfate • tetrahydrate
SF6
Phosphorous Acid
HF(aq)
Dinitrogen pentafluoride

16. Write Correct Balance Equations
The decomposition of magnesium oxide
The decomposition of hydrogen peroxide (H2O2) into oxygen and water
The decomposition of Mg(OH)2 into magnesium oxide and water
The decomposition of NaHCO3
Begin 3rd

17. Write Correct Balance Chemical Equations for the following reactions
1. The synthesis of barium fluoride
2. The decomposition of NaOH
3. The decomposition of CaCO3
Begin 3rd

18. 3) Single Replacement Reaction
In a single replacement reaction (also called a displacement reaction), an element reacts with a compound
A + BC  AC + B

19. Examples of Single Replacement Reactions
Mg + Zn(NO3)2  Mg(NO3)2 + Zn
Mg + 2 AgNO3  Mg(NO3)2 (aq) + 2 Ag

20. Rules for Single Replacement Reactions
NOT ALL single replacement reactions occur
You can determine if a reaction will occur by knowing the activity series of metals or the activity series of Halogens
(See Reference Guide)
Begin 3rd 1/28/02

21. Rules for Single Replacement
The activity series tell you if one metal can replace another metal in a reaction
The Activity Series is ordered
Any metal that is above another metal in the activity series WILL REPLACE the less reactive metal
Begin 3rd

22. Activity Series Li K Ca Na Mg Al Zn Fe Pb H Cu Hg Ag

23. Predict if the following reactions will occur
1. Li + PbSO4
2. Mg + LiNO3
3. Na + AgCl

24. Write balanced equations for the following reactions
4. Li + NaCl 
5. Au + Fe2O3 
6. Fe + ZnO 
7. Br2 + MgI2 

25. Write and Balance the following equations:
1) The decomposition of Iron (III) Chlorate
2) Li2CO3 
3) Li + BaS 
4) Ag + SrSO4 

26. 4) Double Displacement Reactions
In a double displacement reaction, two compounds react
The compounds swap elements with each other
The General Formula
AB + CD  AD + CB
Begin 4th, 1/29/02

27. Double Displacement Cont
Compounds contain a positive and negative part
In a double displacement, the positive parts swap places with each other as do the negative parts

28. ZnBr2 + 2 AgNO3  Zn(NO3)2 + 2 AgBr
Examples
PbCl2 + Li2SO4  PbSO4 + 2 LiCl
ZnBr2 + 2 AgNO3  Zn(NO3) AgBr

29. Predict the Products of the following reactions and balance
BaCl2 (aq) + KClO3 (aq) 
A B C D A D C B
HCl (aq) + NaOH (aq) 
RbBr (aq) + AgCl (aq) 
Begin 3rd , 7th

30. Predict the Products of the following reactions and balance
AgNO3 + NaCl 
NaCl + H2SO4 
FeS + HCl
KOH + H2SO4 