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Lab 14 - Ksp - AP chemistry lab Stuyvesant High School...

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AP chemistry lab Stuyvesant High School 2010-2011 Adapted from “Experimental Chemistry”, 7 th ed. James F. Hall. © S. O’Malley, 2010 LAB 14 – K sp determination When a cation combines with an anion to form an ionic compound, the solubility of that compound can be described based on its solubility product constant, or K sp . Today you will experimentally determine the approximate K sp value for lead(II) iodide. If lead(II) iodide dissolves in water, the following ionization occurs. PbI 2 (s) Pb 2+ (aq) + 2I - (aq) K sp = [Pb 2+ ][I - ] 2 MATERIALS potassium iodide . ......................................................................................... scales lead(II) nitrate . .............................................................................................. scales seven small beakers (100 mL each). ........................................................... cabinet above scales two graduated cylinders (25 mL and 50 mL) . .............................................. cabinet
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Lab 14 - Ksp - AP chemistry lab Stuyvesant High School...

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