1. Predicting Reactions

2. General equation: AB + c  AC + B
Single Displacement
General equation: AB + c  AC + B + 
Like a “girlfriend thief”

3. Helpful Hints Metals replace metals and hydrogen
Halogens replace halogens
Metals + H2O metalOH + H2
Metal OH is metal hydroxide

4. Activity Series Most reactive Non-metals F2 Cl2 Br2 Most reactive I2Li Rb K Cs Ba Sr Ca Na Mg Al Ti Mn Zn Cr Fe Cd Co Ni Sn Pb H Sb Bi Cu Hg Ag Pt Au
Most reactive
Least reactive
Activity Series
Non-metals F2
Cl2
Br2 I2
Most reactive
Least reactive

5. Steps to Predicting Single Displacement Rxns
Look at the reactants given and determine if the single element is a metal or a halogen
Look at the compound given in the reactants, and find the same type of element (metal or halogen) identified in step 1
Find both elements on the reactivity series

6. Look at the products formed
If the element identified in step 1 is higher on the reactivity series than the element in step 2, then they will switch places to form new products
Look at the products formed
If the single element is a diatomic molecule, it needs a subscript of 2
If your compound is not neutral; look at the charges and add subscripts to make it neutral

7. Examples
1. Zn + AgNO3
2. Cl2 + KI
3. Ag + KNO 3

8. General equation: AB + CD  AD + CB
Double Displacement
General equation: AB + CD  AD + CB 
Like “Wife Swap”

9. Steps to Predicting Double Displacement Rxns
Rewrite the cations from the reactants on the product side
Switch the anions, make sure new compounds are neutral!!
Write the physical state of all compounds
Metal OH is metal hydroxide

10. Driving forces Formation of… How do you recognize it? Precipitate
Results in the formation of an insoluble product (solid); use the solubility chart
Gas
You must recognize the substances that are gaseous. These are listed on your blue equation sheet.
Water
Water is always a liquid.

11. Solubility ability to dissolve in water

12. Soluble exceptions: Gas formation
NO2(g)
NO(g)
CO2(g)
SO2(g)
NH3(g)
H2S(g)
CO(g)
H2(g)
HCN(g)

13. Examples Li2CO3(aq) + Co(CH3COO)2(aq) Fe(NO3)3(aq) + K2S(aq)
NaOH(aq) + HCl(aq)
HNO3(aq) + CsOH(aq)
Na2CO3(aq) + H2SO4(aq)