1. What is the chemical equation for the combustion of ethane (C2H6) ?
PREDICTING PRODUCTS
What is the chemical equation for the combustion of ethane (C2H6) ?
1) Unbalanced Equation:
C2H6 + O2 → CO2 + H2O
2) Balanced Equation:
2 C2H6 + 7 O2 → 4 CO2 + 6 H2O

2. PREDICTION & Classification EXAMPLES…
SrI2 (aq) + Br2 (g)→ SrBr2 (aq)+ I2 (s)
Single Replacement
BaCl2 (aq) + Na2SO4(aq) → BaSO4 (s) + 2 NaCl (aq)
Precipitate
H2 + Br2 → 2 HBr
Synthesis
Ba(ClO3) BaCl2 + 3 O2
Decomposition
YOU ARE NOT REQUIRED TO PREDICT PRODUCTS FOR SYNTHESIS OR DECOMP RXNS 
YOU WILL BE EXPECTED TO BE ABLE TO CLASSIFY THEM.

3. PREDICTING PRODUCTS – Practice ?’s
What will be produced when aluminum is reacted with chromium (II) chloride?
1) Unbalanced Equation:
Al + CrCl2 → AlCl3 (aq) + Cr (s)
Single replacement
2) balanced equation:
2Al (s)+ 3CrCl2 (aq) → 2AlCl3 (aq) + 3Cr (s)

4. PREDICTION & CLASSIFICATION PRACTICE PROBLEMS…
Zn (s) + H2SO4 (aq) → ZnSO4 (aq) + H2 (g)
Single Replacement
2 AgNO3 (aq) +Na2CrO4(aq) → Ag2CrO4 (s)+ 2 NaNO3 (aq)
Precipitate
Cu + S → CuS
Synthesis
Al2(CO3) Al2O3 + 3 CO2
Decomposition
YOU ARE NOT REQUIRED TO PREDICT PRODUCTS FOR SYNTHESIS OR DECOMP RXNS 
YOU WILL BE EXPECTED TO BE ABLE TO CLASSIFY THEM.

5. Activity Series F2 Cl2 Br2 Foiled again – I2 Al loses to Ca! Halogen
Element
Reactivity Li Rb K Ba Ca Na Mg Al Mn Zn Cr Fe Ni Sn Pb H2 Cu Hg Ag Pt Au
Activity Series
Halogen
Reactivity Ca F2
Cl2
Br2 I2
Foiled again –
Al loses to Ca!
Objectives:
To explain the concept of an activity series for metals.
To predict whether a single-replacement reaction occurs by referring to the activity series.

6. Examples of Activity Series Rxns
Metal
Reactivity Li Rb K Ba Ca Na Mg Al Mn Zn Cr Fe Ni Sn Pb H2 Cu Hg Ag Pt Au
Examples of Activity Series Rxns
Mg (s) + LiNO3 (aq) → NO REACTION!
Zn (s)+ H2 SO4 (aq) → ZnSO4 (aq) + H2 (g)
Cl2 (g) + 2 RbBr (aq) → 2 RbCl (aq) + Br2(g)
Cl2 + 2 AlF3 → NO REACTION! F2
Cl2
Br2 I2
Halogen
Reactivity