Laboratory Manual for Principles of General Chemistry: Experiment 4 Prelaboratory Assignment: Inorganic Compounds and Metathesis Reactions Flashcards

1. a. Copper(II) sulfate dissolves in water to form a blue solution. What species are present in solution, i.e., what is actually swimming around in solution? Write the formulas.

1. b. Sodium carbonate carbonate dissolves in water to form a colorless solution. What species are present in solution? Write the formulas.

1. c. When solutions of copper(II) sulfate and sodium carbonate are mixed, blue copper(II) carbonate precipitates. What species remain in solution? (These are spectator ions.) What is the color? [Assume that stoichiometric amounts of copper(II) sulfate and sodium carbonate are mixed.] Write the formulas

2. a. An aqueous solution of sodium hydroxide is labeled 0.010M NaOH. What are the molar concentrations of NaOH, Na+ and OH- in the aqueous solution? Explain.

2. b. An aqueous solution of calcium chloride is labeled 0.010 M CaCl2. What are the molar concentrations CaCl2, Ca2+, and Cl- in the aqueous solution? Explain.

3. Sodium phosphate dodecahydrate, Na3PO4(12H2O), is crystalline salt that is water soluble. Describe what is present in an aqueous solution of sodium phosphate dodecahydrate.

4. When aqueous solutions of ferrous sulfate and barium chloride are mixed, a white precipitate forms. With time the aqueous solution turns a red-orange color.
a. Refer to Apendix G. What is the white precipitate? Write the formula.

5. Write molecular equations for each of the following metathesis reactions:
a.

5. Write molecular equations for each of the following metathesis reactions:
b.

5. Write molecular equations for each of the following metathesis reactions:

5. Write molecular equations for each of the following metathesis reactions:
c.

5. Write molecular equations for each of the following metathesis reactions:
d.

5. Write molecular equations for each of the following metathesis reactions:e.

6. List 5 observations, appealing to your senses, that indicate a chemical reaction has occurred. In each case, identify an example where you have experienced that observation.