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Determining the Stoichiometry of Chemical Reactions—AP* Chemistry Classic Laboratory Kit

By: The Flinn Staff

Item #: AP6451

Price: $66.55

The Determining the Stoichiometry of Chemical Reactions Classic Lab Kit for AP* Chemistry guides students in continuous variation to determine the mole ratio of reactants and predict chemical formulas of the products for various reactions.

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Classic AP Requirement #9—Determination of Mass and Mole Relationship in a Chemical Reaction

Learn the method of continuous variation to determine the mole ratio of the reactants and predict the chemical formula of the product for specific chemical reactions. In Part 1, the students mix known amounts of iron(III) nitrate and sodium hydroxide in a series of reactions to form a precipitate of iron(III) hydroxide. Each reaction contains a different mole ratio of reactants. The students extrapolate the data to determine the optimum ratio of reactants and predict the correct formula of the precipitated product. The experiment is repeated in Part 2 for copper(II) chloride and sodium phosphate.  

Complete for 24 students working in pairs.

Determining the Stoichiometry of Chemical Reactions Inquiry Guidance & AP* Chemistry Curriculum Alignment Transition Guide available! Follow the link in Resources to find this valuable publication that lets you adapt this classic AP Chemistry experiment for guided-inquiry and correlate with the AP Chemistry curriculum framework.


Materials Included in Kit (for 24 students working in pairs): Copper(II) chloride solution, iron(III) nitrate solution, sodium hydroxide solution, sodium phosphate solution.

Additional Materials Required (for each lab group): Graduated cylinders, markers or labeling pen, long stirring rods.

*Advanced Placement and AP are registered trademarks of the College Board, which was not involved in the production of, and does not endorse, these products.