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Unformatted text preview: Chemistry 2080 Spring 2009
Problem Set #9 — due date: Friday, April l7th at 2 pm
Name: Lab TA Name:_ Lab Day/Time:
Practice problems (not graded). Chapter 18: 2,4, 7, 9, 20, 49 1) What is the minimum concentration of ammonium chloride (NH4Cl) that would just prevent a precipitate
forming in a solution that is 0.015 M in MgC12 and 0.20 M in ammonia (NH3)? [State what value you are using for the Ksp of Mg(OH)2]. 2) 600 mL of 0.0080 M K2804 is added to 200 mL of 0.0040 M BaCiZ; will a precipitate form? 3) What is the solubility in g/L of silver chloride (AgCl) in a 6.5x10‘3 M silver nitrate solution? 4) A volume of 75mL of 0.060 M NaF is mixed with 25 mL of 0.15 M Sr(NO3)2. Calculate the concentrations
in the ﬁnal solution of NO3‘, Na+, Sr2+, and F“- (KSP for SrF2 is 2.0x10‘10) ...
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This note was uploaded on 05/05/2009 for the course CHEM 2080 taught by Professor Davis,f during the Spring '07 term at Cornell.
- Spring '07