Reactions of Ions in Solutions. Net Ionic Equations NaOHCuCl 2 Na + Cl - Cu +2 Cl - Dissolved in a...

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Reactions of Ions in Solutions

Transcript of Reactions of Ions in Solutions. Net Ionic Equations NaOHCuCl 2 Na + Cl - Cu +2 Cl - Dissolved in a...

Page 1: Reactions of Ions in Solutions. Net Ionic Equations NaOHCuCl 2 Na + Cl - Cu +2 Cl - Dissolved in a solution the ionic compound breaks down into it’s ions.

Reactions of Ions in Solutions

Page 2: Reactions of Ions in Solutions. Net Ionic Equations NaOHCuCl 2 Na + Cl - Cu +2 Cl - Dissolved in a solution the ionic compound breaks down into it’s ions.

Net Ionic EquationsNaOH CuCl2

Na+

Cl- Cu+2Cl-

Cl-

Dissolved in a solution the

ionic compound breaks down into it’s ions

Page 3: Reactions of Ions in Solutions. Net Ionic Equations NaOHCuCl 2 Na + Cl - Cu +2 Cl - Dissolved in a solution the ionic compound breaks down into it’s ions.

What is a net ionic equation?

•a way of representing a balanced chemical equation by writing only those ions (dissociated in solution) that actually participated in the reaction creating a solid precipitate. (usually double displacement reactions)

•The ions that didn’t actually react are called spectator ions and are cancelled out on both sides of the equation

•Spectator ions: ions that are not involved in a chemical reaction

Page 4: Reactions of Ions in Solutions. Net Ionic Equations NaOHCuCl 2 Na + Cl - Cu +2 Cl - Dissolved in a solution the ionic compound breaks down into it’s ions.

Steps for writing net ionic equations•1. Write the balanced chemical

equation with full chemical formulas for all reactants and products

•2. Using the solubility information, such as the table you’ve already been provided, rewrite the formulas for all high solubility ionic compounds as dissociated ions, to show the total ionic equation

Page 5: Reactions of Ions in Solutions. Net Ionic Equations NaOHCuCl 2 Na + Cl - Cu +2 Cl - Dissolved in a solution the ionic compound breaks down into it’s ions.

Steps for writing net ionic equations

•3. Cancel out the spectator ions

•4. Write the net ionic equation, reducing coefficients if necessary

Page 6: Reactions of Ions in Solutions. Net Ionic Equations NaOHCuCl 2 Na + Cl - Cu +2 Cl - Dissolved in a solution the ionic compound breaks down into it’s ions.

I want to mix the two solutions, Sodium Hydroxide (NaOH) and Copper (II) Chloride

(CuCl2).

OverallReaction

2NaOH(aq) + CuCl2 (aq) ----> 2NaCl (aq) + Cu(OH)2 (s)

PrecipitateSoluble insoluble

Page 7: Reactions of Ions in Solutions. Net Ionic Equations NaOHCuCl 2 Na + Cl - Cu +2 Cl - Dissolved in a solution the ionic compound breaks down into it’s ions.

I want to mix the two solutions, Sodium Hydroxide (NaOH) and Copper (II) Chloride

(CuCl2).Complete

IonicReaction

remove those spectators2Na+ +2OH- + Cu+2 +2Cl - ----> 2Na+ +2Cl- +

Cu(OH)2 (s)

2Na+ +OH- + Cu+2 +2Cl - ----> 2Na+ +2Cl- + Cu(OH)2 (s)

Page 8: Reactions of Ions in Solutions. Net Ionic Equations NaOHCuCl 2 Na + Cl - Cu +2 Cl - Dissolved in a solution the ionic compound breaks down into it’s ions.

I want to mix the two solutions, Sodium Hydroxide (NaOH) and Copper (II) Chloride

(CuCl2).

Net IonicReaction

2OH- + Cu+2 ----> Cu(OH)2 (s)

Page 9: Reactions of Ions in Solutions. Net Ionic Equations NaOHCuCl 2 Na + Cl - Cu +2 Cl - Dissolved in a solution the ionic compound breaks down into it’s ions.

Aqueous solution of aluminum chloride & sodium hydroxide react to form solid

aluminum hydroxide

Page 10: Reactions of Ions in Solutions. Net Ionic Equations NaOHCuCl 2 Na + Cl - Cu +2 Cl - Dissolved in a solution the ionic compound breaks down into it’s ions.

A zinc strip is dipped into an aqueous solution of silver nitrate.

Write a net ionic equation

Page 11: Reactions of Ions in Solutions. Net Ionic Equations NaOHCuCl 2 Na + Cl - Cu +2 Cl - Dissolved in a solution the ionic compound breaks down into it’s ions.