Net Ionic Equations
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Net Ionic Equations

If we eliminate the spectator ions from the complete ionic equation we have what is called the net ionic equation. It shows only the ions that are actually involved in the reaction.

Ba2+ + 2 NO3- + Cu2+ + SO42-  rtarrow.gif (850 bytes) BaSO4(ppt) + Cu2+ + 2 NO3-
Ba2+ + SO42- rtarrow.gif (850 bytes) BaSO4(ppt)

 

Practice

Take some time now to write the net ionic equations for the reactions you have been working with. Also, Identify the spectator ions in these reactions. Check your answers below before continuing with the lesson.

Answers

These are the net-ionic equations for the reactions in which precipitates are predicted in Exercise 9.

Ba2+ + SO42- rtarrow.gif (850 bytes)  BaSO4        copper(II) and nitrate were the spectator ions

2 Ag+ + SO42- rtarrow.gif (850 bytes)  Ag2SO4      copper(II) and nitrate were the spectator ions

Cu2+ + 2 OH- rtarrow.gif (850 bytes) Cu(OH)2     sodium and sulfate were the spectator ions

Ba2+ + 2 OH- rtarrow.gif (850 bytes) Ba(OH)2      sodium and nitrate were the spectator ions

Ag+ + OH- rtarrow.gif (850 bytes) AgOH      sodium and nitrate were the spectator ions

Ag+ + Cl- rtarrow.gif (850 bytes) AgCl       potassium and nitrate were the spectator ions

 

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