Chemical Reactions Problem Set

This problem set was developed by S.E. Van Bramer for Chemistry 145 at Widener University.

  1. When the following solutions are mixed, does a precipitate form? Write out the total, total ionic, and net ionic equations.

    1. silver nitrate and rubidium chloride
    2. lead nitrate and potassium chloride
    3. mercury (I) nitrate and hydrochloric acid
    4. calcium chloride and sodium carbonate
    5. magnesium nitrate and calcium chloride
    6. potassium sulfate and barium chloride

  2. For the following reactions: Name the reactants and products, Balance the equation, Calculate the molecular weight of the reactants and products.
    1. Fe2O3 (s ) + CO (g) -> FeO (s) + CO2 (g)
    2. FeO (s) + CO (g) -> Fe (s) + CO2 (g)
    3. C12H22O11 (s) + O2 (g) -> CO2 (g) + H2O (g)
    4. Fe (s) + O2 (g) -> Fe2O3 (s)
    5. Ca (s) + H2O (l) -> Ca(OH)2 (aq) + H2 (g)

  3. Write a balanced equation for the following reactions. Determine if any of the reactants or products are soluble in water. Identify any gas that is produced. Identify any precipitate that is produced. Are the reactants soluble in water?
    1. Aluminum metal is oxidized by oxygen (from the air) to form aluminum oxide.
    2. Sodium oxide reacts with carbon dioxide to form sodium carbonate.
    3. Calcium metal reacts with water to form calcium hydroxide and hydrogen gas.
    4. Potassium nitrate decomposes to form potassium nitrite and oxygen.
    5. Barium metal reacts with Iron (III) sulfate to produce barium sulfate and iron metal.
    6. Barium chloride reacts with sodium sulfate to produce barium sulfate and sodium chloride.
    7. Bismuth (III) oxide and zinc metal react to produce zinc (II) oxide and bismuth metal.
    8. Calcium metal reacts with phosphorus to produce calcium phosphide.
    9. Copper metal reacts with sulfuric acid and water to produce copper sulfate pentahydrate and sulfur dioxide.
    10. The combustion of decane.
    11. The combustion of pamoic acid (C23H16O4).
    12. A solution of hydrochloric acid reacts with a solid calcium bicarbonate to produce water, carbon dioxide, and calcium chloride.
    13. A solution of acetic acid reacts with solid iron (II) hydroxide.
    14. hydrofluoric acid reacts with sodium hydroxide.

  4. Determine if a precipitate forms when the following solutions are mixed. Write the overall equation, the total ionic equation, and the net ionic equation.
    1. A solution of sodium fluoride is mixed with a solution of barium nitrate.
    2. A solution of ammonium carbonate is mixed with a solution of calcium acetate.
    3. A solution of potassium bromide is mixed with a solution of ammonium sulfate.
    4. A solution of sodium chromate is mixed with a solution of barium sulfate.
Please send comments or suggestions to svanbram@science.widener.edu

Scott Van Bramer
Department of Chemistry
Widener University
Chester, PA 19013

© copyright 1996, S.E. Van Bramer
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Last Updated: Friday, November 03, 2000 10:29:05 AM