1. Double Replacement Reactions

2. Predicting Solubility
High Solubility means that a lot of compound will dissolve in water (> 0.1 moles per 1 L)
Low Solubility means very little compound will dissolve in water (< 0.1 moles per 1 L)

3. K2SO4
High Solubility
AgCl
Low Solubility
BaCl2
Ba2+
High Solubility

4. Cu2+
CuI2
High Solubility
PbSO4
Low Solubility
Co2+
CoS
Low Solubility
Rb2SO3
High Solubility

5. Double replacement reactions occur when the metal ions of two aqueous compounds switch places.
A formation of a precipitate, a compound with low solubility, causes the reaction to occur.
AgNO3(aq) NaCl (aq) 
AgCl
(s)
+ NaNO3
(aq)
low solubility
high solubility
You must have at least one low solubility product to have a reaction!
Note: low is (s) and high is (aq)!

6. Al3+ OH-
Sr2+ NO3-
Sr(OH)2(aq) Al(NO3)3 (aq)  3 2 2
Al(OH)3
(s)
+ Sr(NO3)2 3
(aq)
Al 3+

7. H2SO4(aq) + Ca(NO3)2(aq) 
CaSO
(s) 2
HNO3
(aq)
low
high
MgCl2(aq) Na2SO4(aq) 
MgSO
no reaction
(aq)
NaCl
(aq)
high
high
Sr(OH)2(aq) BeSO4(aq) 
SrSO
(s)
Be(OH)2
(s)
low
low
two reactions

8. Double replacement reactions occur when something new is produced
Double replacement reactions occur when something new is produced. If a product is solid, liquid, or gas, the reaction will happen.
Neutralization Reactions
HCl(aq) + NaOH(aq) 
NaCl(aq) HOH(l)
Acid Base 
Salt Water

9. Double replacement reactions occur when something new is produced
Double replacement reactions occur when something new is produced. If a product is solid, liquid, or gas, the reaction will happen.
Acid Carbonate Reactions
2HNO3(aq) + Na2CO3(aq) 
2NaNO3(aq) + H2CO3(aq)
2HNO3(aq) + Na2CO3(aq) 
2NaNO3(aq) + H2O(l) + CO2(g)
carbonic acid breaks down to form carbon dioxide and water
Mento craziness
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