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This document describes the preparation and titration of potassium tris(oxalato)aluminate(III) (K3[Al(C2O4)3]·3H2O). First, aluminum foil is reacted with potassium hydroxide and oxalic acid to synthesize the compound. Then, the compound is titrated with potassium permanganate to determine the mass percent of oxalate. During titration, oxalate ions are oxidized by permanganate ions, changing the solution from purple to colorless. When all oxalate is consumed, the solution turns pink, indicating the endpoint.

Author

dwayne420

Language

EN