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Advanced Placement®—
Classic Lab Kits, continued
pH Properties of Buffer Solutions
In this laboratory, students investigate the properties of buffer solutions. The
students make two ideal buffer solutions, one consisting of a weak acid and its
conjugate base, and the other, a weak base and its conjugate acid. The initial pH of
each solution is determined. Strong acid and strong base are then added to each
buffer in a series of steps, with the pH determined after each addition. The resulting
pH values after each addition are compared to calculated values for each buffer. A
challenging lab to test students’ understanding of pH and buffer chemistry.
Formerly AP Requirement: #19
Catalog No. Description Price/Each
AP6445 pH Properties of Buffer Solutions
Classic Lab Kit for AP® Chemistry
$50.85
An Activity Series
Students study a series of metals and nonmetals to determine their relative reactivity,
then rank them according to their reactivity in an activity series. First, the
reactivity of the metals is determined by reacting a series of metals with metal salt
solutions. Second, the reactivity of the halogens are determined by reacting each of
the halogens with a halide solution. Based on the observed reactivity in each case,
students develop a separate activity series for the metals and the halogens. Students
understand why some metals can “replace” other metals and why some redox reactions
are spontaneous while others require a battery. Students also learn that the
reactivity for the halogens is opposite that for the other families in the periodic table.
Formerly AP Requirement: #20
Catalog No. Description Price/Each
AP5914 An Activity Series Classic Lab Kit for AP® Chemistry $72.10
CHEMISTRY ADVANCED PLACEMENT®
An Activity Series
Classic Lab Kit for
AP® Chemistry
AP5914
The Determination of Keq for FeSCN2+
In this two-part lab, students will determine the equilibrium constant for the reaction
of iron(III) ions with thiocyanate ions (SCN¯). In Part 1, a series of reference solutions
containing the product ion, iron(III) thiocyanate (FeSCN2+), is prepared. Students
then make up test solutions containing a fixed amount of iron(III) ions and different
amounts of the SCN¯ ion. These solutions are analyzed in Part 2 using a colorimeter.
The first set of solutions is used to generate a calibration curve of absorbance versus
the concentration of FeSCN2+ ions. The second set of solutions is then analyzed and
the FeSCN2+ ion concentration of each solution is determined. The students use
the data to calculate the equilibrium constant for the reaction of iron(III) ions with
thiocyanate ions (SCN¯). Students gain valuable experience in the techniques of
quantitative transfer, along with the process of colorimetric determination.
Formerly AP Requirement: #17
Catalog No. Description Price/Each
AP6352 The Determination of Keq for FeSCN2+
Classic Lab Kit for AP® Chemistry
$25.80
AP® CHEMISTRY continued on next page.
Synthesis, Isolation and Purification of an Ester
Students perform a quantitative esterification reaction to produce ethyl acetate. The
lab consists of three parts—in Part 1, the ethyl acetate is prepared; in Part 2, the ethyl
acetate is purified; and in Part 3, tests are performed to verify the identity of the ethyl
acetate. The theoretical yield is then calculated and the percent yield is determined.
Students receive hands-on experience with common organic chemistry techniques,
such as refluxing, extractions and distillation.
Formerly AP Requirement: #22
Catalog No. Description Price/Each
AP9094 Synthesis, Isolation and Purification of an Ester
Classic Lab Kit for AP® Chemistry
$43.85
Synthesis and Analysis
of a Coordination Compound
Students synthesize the coordination compound potassium trioxalatoferrate(
III)
trihydrate, K3Fe(C2O4)3•3H2O. Once produced, the product is identified by colorimetric
methods and the percent yield of the product is determined. The absorbance
of a solution of the product will be taken at three wavelengths. The ratios of these
absorbances are used to identify the compound in solution as K3Fe(C2O4)3•3H2O.
Formerly AP Requirement: #15
Catalog No. Description Price/Each
AP6454 Synthesis and Analysis of a Coordination Compound
Classic Lab Kit for AP® Chemistry
$53.80
Gravimetric Analysis of a Metal Carbonate
In this laboratory, students determine the identity of a Group 1 metal carbonate by
gravimetric analysis. The unknown is weighed, dissolved in water and precipitated
as calcium carbonate. The precipitate is filtered, dried and weighed. From the data,
the formula weight and the identity of the unknown metal carbonate are determined.
Students gain valuable experience in the process of gravimetric analysis. The lab is
free of heavy-metal waste typically generated with most gravimetric analysis labs.
Formerly AP Requirement: #16
Catalog No. Description Price/Each
AP6378 Gravimetric Analysis of a Metal Carbonate
Classic Lab Kit for AP® Chemistry
$38.25
Liquid Chromatography
Classic Lab Kit for
AP® Chemistry
AP9093
Liquid Chromatography
Separate different colored dyes found in grape Kool-Aid® using chromatography
methods that mimic popular methods used in research and industry. Miniature liquid
chromatography columns called Sep-Pak® C18 cartridges are used to separate the
dyes and polar components of Kool-Aid. Students will understand the chromatographic
process and relate the polarity of molecules to the separation process.
Formerly AP Requirement: #18
Catalog No. Description Price/Each
AP9093 Liquid Chromatography Classic Lab Kit for AP® Chemistry $101.00
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