1. A word about ….

2. Single Replacement Reactions
A + BX  AX + B
A replaces B in compound BX
[Element + Compound  New Element + New Compound]

3. Three types of SR reactions:
Metal replaces hydrogen in a compound
Metal replaces another metal in a compound
Nonmetal replaces a nonmetal in a compound

4. Single Replacement Reactions
Metals have different reactivities
Can predict if given metal and given
compound will react or not

5. Single Replacement Rxns
Table J is activity series
more reactive metals lose valence electrons more easily
determine if a reaction will occur
most active metal is at top
least active metal is at bottom

6. Single Replacement Rxns
The rule -
metal can:
replace any metal listed below itself on table J
metal cannot:
replace any metal listed above itself on table J

7. Ag(s) + Cu(NO3)2(aq)  ?
What metal is looking to replace what metal?
can Ag replace Cu?
Locate Ag and Cu in Table J
Ag is below Cu so this reaction will not go
Ag is less reactive than Cu NR

8. Cu(s) + AgNO3(aq)  ? What metal is looking to replace what metal?
can Cu replace Ag?
Locate Cu and Ag in Table J
Cu is above Ag in Table J
Cu is more reactive than Ag
This reaction will go
 Ag(s) + Cu(NO3)2(aq)
Balance!!
Cu(s) + 2AgNO3(aq)  2Ag(s) + Cu(NO3)2(aq)

9. Nonmetals also have different reactivities
Look at Table J
Halogens are often the nonmetal
Most active halogen = fluorine at top
Least active halogen = iodine at bottom
Nonmetals can only replace nonmetal below itself on the table

10. Single Replacement Reactions
F2(g) NaBr(aq)  2 NaF(aq) + Br2(l)
F looks to replace Br (not Na)
This reaction occurs because F2 is above Br2

11. Single Replacement ReactionNR
Br2(g) NaF(aq)  ?
Br2 is below F2 in Table J
This reaction does not occur

12. Use Table J to predict if these reactions occur
K + ZnCl2 
Fe + Na3PO4 
Cu + Mg(NO3)2 
Al SnCl2 
Ca + KBr 
Ti + Pb(NO3)2 
Cl2 + HF 
F2 + CaI2  2
Yes: KCl + Zn 2 No No 2 3
Yes: AlCl Sn 2 3 No
Yes: Ti(NO3)2 + Pb No
Yes: CaF I2