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Identifying an Unknown Metal Carbonate - Stoichiometry Guided-Inquiry Kit

by Flinn Scientific

Item #: AP7247

Price: $33.05

In the Identifying an Unknown Metal Carbonate - Stoichiometry Guided-Inquiry Laboratory Kit, students use different analytical techniques to identity and confirm an unknown Group 1 carbonate. The level of student dependence can be modified.

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How do chemists determine the identity of a compound? A variety of analytical techniques and procedures, ranging from classical, wet-chemistry methods to instrumental methods, have been developed to accomplish this important task. In this stoichiometry, guided-inquiry lab, students use two different analytical techniques to identity and confirm an unknown Group 1 metal carbonate. In Part 1, students measure the loss in mass when they react their metal carbonate with acid to produce carbon dioxide gas and use the stoichiometry of the gas evolution reaction to identify and confirm the unknown sample. In Part 2, students titrate the metal carbonate with hydrochloric acid and again use the stoichiometry of the titration reaction to determine or confirm the moles of carbonate ion in the unknown. The level of student independence or teacher direction in this guided-inquiry lab can be modified to suit your level of instruction. Students improve their laboratory technique skills and develop pride and ownership of their work when faced with an inquiry challenge! Includes Teacher Notes with complete sample data, reproducible student handouts with background information, and all necessary chemicals and consumable supplies. Complete for 30 students working in pairs.