1. Reactions in Aqueous Solution:

2. Double Replacement Reactions AB + CD  AD + CB AB + CD  AD + CB

3. A Precipitation Reaction NaI(aq) + Pb(NO 3 ) 2 (aq) NaNO 3 (aq) + PbI 2 (s)

4. NaI(aq) + Pb(NO 3 ) 2 (aq) NaNO 3 (aq) + PbI 2 (s)

5. NaI(aq) + Pb(NO 3 ) 2 (aq)NaNO 3 (aq) + PbI 2 (s)  Balance the formula equation.  Write the total ionic equation.  Write the net ionic equation.

6. Precipitation Reactions Precipitate – insoluble solid that separates from solution net ionic equation Pb 2+ + 2NO 3 - + 2Na + + 2I - PbI 2 (s) + 2Na + + 2NO 3 - Na + and NO 3 - are spectator ions Pb(NO 3 ) 2 (aq) + 2NaI (aq) PbI 2 (s) + 2NaNO 3 (aq) precipitate Pb 2+ + 2I - PbI 2 (s) “If you’re not a part of the solution, then you’re a part of the precipitate!”

7. Writing Net Ionic Equations 1.Write the balanced formula equation. 2.Write the total ionic equation. 3.Cancel the spectator ions on both sides of the ionic equation. 4.Write the net ionic equation. AgNO 3 (aq) + NaCl (aq) AgCl (s) + NaNO 3 (aq) Ag + + NO 3 - + Na + + Cl - AgCl (s) + Na + + NO 3 - Ag + + Cl - AgCl (s) Write the net ionic equation for the reaction of silver nitrate with sodium chloride.

8. Write the balanced formula equation for this double replacement reaction. Write the net ionic equation for the reaction.

9. Write the balanced formula equation for this double replacement reaction. Write the net ionic equation for the reaction.

10. Solubility Rules

11. Gravimetric Analysis- A quantitative analysis of a double replacement reaction The solid produced in the reaction is isolated by filtering and rinsing. After the filter and solid are dried, the mass of the barium sulfate is measured.

12. Another double replacement reaction: Formation of Water Mixing an acid and base Mixing an acid and base

13. And yet another double replacement reaction Ba(OH) 2 (aq) + H 2 SO 4 (aq)  Ba(OH) 2 (aq) + H 2 SO 4 (aq) 

14.   H2OH2O Ions in solution are dissociated attracted to the water by ion-dipole attractions. While ions in the precipitate held in fixed positions by ionic bonds between the ions

15. Try this one! Write the formula, total ionic, and net ionic equations for this reaction: Silver nitrate reacts with Lead (II) Chloride in hot water. Formula: Total Ionic: Net Ionic: