1. Net Ionic Equations

2. Aqueous solutions of Sodium Hydroxide and Copper (II) Chloride combine to form an aqueous solution of sodium chloride and solid blue Copper Hydroxide
Write a skeleton equation
Balance the equation.
Identify the spectator ions.
Write the total ionic equation.
Write the net ionic equation.

3. Aqueous solutions of Sodium Hydroxide and Copper (II) Chloride combine to form an aqueous solution of sodium chloride and solid blue Copper Hydroxide

4. Na(OH)(aq) + CuCl2(aq)
Cl -1
Cu+2
Na+1
OH -1
Cl -1

5. Na(OH)(aq) + CuCl2(aq)  NaCl(aq) + Cu(OH)2 (s)
The Copper and Hydroxide Join to form solid Copper Hydroxide
Cl -1
Na+1
Cu+2
OH -1
Precipitate
OH -1
Cl -1
Equation Not Balanced

6. Na(OH)(aq) + CuCl2(aq)  NaCl(aq) + Cu(OH)2 (s)
Balance the skeleton Equation Na O H Cu Cl

7. Na(OH)(aq) + CuCl2(aq)  NaCl(aq) + Cu(OH)2 (s)
Balance the skeleton Equation Na O H Cu Cl 1 2

8. 2Na(OH)(aq) + CuCl2(aq)  NaCl(aq) + Cu(OH)2 (s)
Balance the skeleton Equation Na O H Cu Cl 1 2

9. 2Na(OH)(aq) + CuCl2(aq)  2NaCl(aq) + Cu(OH)2 (s)
Balanced Molecular Formula Na O H Cu Cl 1 2

10. Spectator Ions? They don’t take part in the reaction.
Cl -1
Na+1
Cl -1
Na+1
OH -1
OH -1
Cu+2
Cu+2
Cl -1
Na+1
OH -1
Na+1
Cl -1
OH -1
Na+1
Cl -1
Cl -1
Na+1
Na+1
Na+1
OH -1
OH -1
Cu+2
Cu+2
OH -1
Cl -1
Cl -1
OH -1

11. WRITING TOTAL AND NET IONIC EQUATIONS
Balanced molecular equation.
Disassociate the aqueous ionic compounds (strong electrolytes) indicating the correct formula, number and charge of each.
Bring down all compounds with (s), (l), or (g) unchanged.
This is a total Ionic Equation. For a net ionic equation cross out the spectator ions.

12. 2Na(OH)(aq) + CuCl2(aq)  2NaCl(aq) + Cu(OH)2 (s)
Balanced molecular equation.
Disassociate the aqueous ionic compounds (strong electrolytes) indicating the correct formula, number and charge of each.
Bring down all compounds with (s), (l), or (g) unchanged.
This is a total Ionic Equation. For a net ionic equation cross out the spectator ions.

13. 2Na(OH)(aq) + CuCl2(aq)  2NaCl(aq) + Cu(OH)2 (s)
2Na1+(aq) + 2(OH)1-(aq) + Cu2+(aq) + 2Cl1-(aq)  2Na1+(aq) + 2Cl1-(aq) + Cu(OH)2(s)
Balanced molecular equation.
Disassociate the aqueous ionic compounds (strong electrolytes) indicating the correct formula, number and charge of each.
Bring down all compounds with (s), (l), or (g) unchanged.
This is a total Ionic Equation. For a net ionic equation cross out the spectator ions.

14. 2Na(OH)(aq) + CuCl2(aq)  2NaCl(aq) + Cu(OH)2 (s)
2Na1+(aq) + 2(OH)1-(aq) + Cu2+(aq) + 2Cl1-(aq)  2Na1+(aq) + 2Cl1-(aq) + Cu(OH)2(s)
Balanced molecular equation.
Disassociate the aqueous ionic compounds (strong electrolytes) indicating the correct formula, number and charge of each.
Bring down all compounds with (s), (l), or (g) unchanged.
This is a total Ionic Equation. For a net ionic equation cross out the spectator ions.

15. 2Na(OH)(aq) + CuCl2(aq)  2NaCl(aq) + Cu(OH)2 (s)
2Na1+(aq) + 2(OH)1-(aq) + Cu2+(aq) + 2Cl1-(aq)  2Na1+(aq) + 2Cl1-(aq) + Cu(OH)2(s)
Balanced molecular equation.
Disassociate the aqueous ionic compounds (strong electrolytes) indicating the correct formula, number and charge of each.
Bring down all compounds with (s), (l), or (g) unchanged.
This is a total Ionic Equation. For a net ionic equation cross out the spectator ions.

16. 2Na(OH)(aq) + CuCl2(aq)  2NaCl(aq) + Cu(OH)2 (s)
2Na1+(aq) + 2(OH)1-(aq) + Cu2+(aq) + 2Cl1-(aq)  2Na1+(aq) + 2Cl1-(aq) + Cu(OH)2(s)
Balanced molecular equation.
Disassociate the aqueous ionic compounds (strong electrolytes) indicating the correct formula, number and charge of each.
Bring down all compounds with (s), (l), or (g) unchanged.
This is a total Ionic Equation. For a net ionic equation cross out the spectator ions.

17. 2Na(OH)(aq) + CuCl2(aq)  2NaCl(aq) + Cu(OH)2 (s)
2Na1+(aq) + 2(OH)1-(aq) + Cu2+(aq) + 2Cl1-(aq)  2Na1+(aq) + 2Cl1-(aq) + Cu(OH)2(s)
TOTAL IONIC EQUATION
Balanced molecular equation.
Disassociate the aqueous ionic compounds (strong electrolytes) indicating the correct formula, number and charge of each.
Bring down all compounds with (s), (l), or (g) unchanged.
This is a total Ionic Equation. For a net ionic equation cross out the spectator ions.

18. 2Na(OH)(aq) + CuCl2(aq)  2NaCl(aq) + Cu(OH)2 (s)
2Na1+(aq) + 2(OH)1-(aq) + Cu2+(aq) + 2Cl1-(aq)  2Na1+(aq) + 2Cl1-(aq) + Cu(OH)2(s)
Net IONIC EQUATION?
Balanced molecular equation.
Disassociate the aqueous ionic compounds (strong electrolytes) indicating the correct formula, number and charge of each.
Bring down all compounds with (s), (l), or (g) unchanged.
This is a total Ionic Equation. For a net ionic equation cross out the spectator ions.

19. 2Na(OH)(aq) + CuCl2(aq)  2NaCl(aq) + Cu(OH)2 (s)
2Na1+(aq) + 2(OH)1-(aq) + Cu2+(aq) + 2Cl1-(aq)  2Na1+(aq) + 2Cl1-(aq) + Cu(OH)2(s)
2(OH)1-(aq) + Cu2+(aq)  Cu(OH)2(s)
Balanced molecular equation.
Disassociate the aqueous ionic compounds (strong electrolytes) indicating the correct formula, number and charge of each.
Bring down all compounds with (s), (l), or (g) unchanged.
This is a total Ionic Equation. For a net ionic equation cross out the spectator ions.
Net IONIC EQUATION

20. ANOTHER EXAMPLE

21. BaCl2(aq)

22. BaCl2(aq) + Na2(SO4) 

23. BaCl2(aq) + Na2(SO4)  2NaCl(aq)

24. BaCl2(aq) + Na2(SO4)  2NaCl(aq) + BaSO4(s)

25. BaCl2(aq) + Na2(SO4)(aq)  2NaCl(aq) + BaSO4(s)
BALANCED MOLECULAR FORMULA
Balanced molecular equation.
Show the disassociated ions individually.
Bring down all compounds with (s), (l), or (g) unchanged.
Cross out the spectator ions.

26. BaCl2(aq) + Na2(SO4)(aq)  2NaCl(aq) + BaSO4(s)
BALANCED MOLECULAR FORMULA
Ba2+(aq) + 2Cl1-(aq) + 2Na1+(aq) + SO42-(aq)  2Na1+(aq) + 2Cl1-(aq) + BaSO4(s)
TOTAL IONIC EQUATION
Balanced molecular equation.
Show the disassociated ions individually.
Bring down all compounds with (s), (l), or (g) unchanged.
Cross out the spectator ions.

27. BaCl2(aq) + Na2(SO4)(aq)  2NaCl(aq) + BaSO4(s)
BALANCED MOLECULAR FORMULA
Ba2+(aq) + 2Cl1-(aq) + 2Na1+(aq) + SO42-(aq)  2Na1+(aq) + 2Cl1-(aq) + BaSO4(s)
TOTAL IONIC EQUATION
Ba2+(aq) + 2Cl1-(aq) + 2Na1+(aq) + SO42-(aq) 2Na1+(aq) + 2Cl1-(aq) + BaSO4(s)
CROSS OUT SPECTATOR IONS
Balanced molecular equation.
Show the disassociated ions individually.
Bring down all compounds with (s), (l), or (g) unchanged.
Cross out the spectator ions.

28. BaCl2(aq) + Na2(SO4)(aq)  2NaCl(aq) + BaSO4(s)
BALANCED MOLECULAR FORMULA
Ba2+(aq) + 2Cl1-(aq) + 2Na1+(aq) + SO42-(aq)  2Na1+(aq) + 2Cl1-(aq) + BaSO4(s)
TOTAL IONIC EQUATION
Ba2+(aq) + 2Cl1-(aq) + 2Na1+(aq) + SO42-(aq) 2Na1+(aq) + 2Cl1-(aq) + BaSO4(s)
CROSS OUT SPECTATOR IONS
Ba2+(aq) + SO42-(aq) BaSO4(s)
NET IONIC EQUATION
Balanced molecular equation.
Show the disassociated ions individually.
Bring down all compounds with (s), (l), or (g) unchanged.
Cross out the spectator ions.

29. An aqueous solution of aluminum chloride and sodium hydroxide react to form solid aluminum hydroxide.
Write a skeleton equation
Balance the equation (molecular formula)
Write the total ionic equation.
Identify the spectator ions.
Write the net ionic equation.
Neutralization Acid—Base reaction…. HBr (aq) + NaOH(aq)  H2O + NaBr
Assignment