Humboldt State University ® Department of Chemistry

Richard A. Paselk

	Introductory Chemistry	Fall 2005
Exercise: Net IonicBalancing	© R. Paselk 2005
	Worked Examples
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Balancing by Inspection - Net Ionic Equations

Write Balanced Net-Ionic Equations for the following Reactions in Aqueous Solution:

1. Copper metal (Cu_(s)) is immersed in an aqueous solution of silver nitrate (AgNO₃). The solution turns light blue and a silver coating appears on the copper.

2. Dilute solutions of antimony(III) chloride and sodium sulfide are mixed to give a precipitate.

3. Dilute solutions of silver nitrate and potassium iodide are combined and give a yellow precipitate.

4. Dilute solutions of aluminum chloride and sodium hydroxide are mixed, giving a gelatinous precipitate.

5. Dilute solutions of calcium chloride and sodium phosphate are combined to give a precipitate.

6. Dilute solutions of nitric acid and sodium hydroxide are mixed, generating heat.

7. Dilute solutions of sulfuric acid and sodium hydroxide are mixed, generating heat.

8. A dilute solution of hydrochloric acid is poured over limestone (calcium carbonate) and a non-flammable, odorless gas is released as the rock dissolves.

9. Dilute solutions of lead(II) nitrate and sodium chloride are combined and give a white precipitate.

10. Dilute solutions of barium chloride and sodium sulfate are combined to give a white insoluble precipitate.

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