Ch102 Postlab 04 Qualitative Analysis

Ch102 Postlab 04 Qualitative Analysis - CH102 Postlab 04...

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Stephanie Mayor CH 102, section 023, Fall 2009 Instructor: Matthew Correll Lehman TA 1. –/5 points 1/3 submissions Notes Web Assign CH102 Postlab 04 Qualitative Analysis (Postlab) Due: Thursday, September 24, 2009 11:00 PM EDT About this Assignment Ask Your Teacher Extension Requests Question Points 1 2 3 4 5 5 5 5 5 5 Total 25/25 Remember your Solubility Rules and your results from the Solubility Rules lab when answering this question. The qualitative analysis experiment you did is actually the first stage of a much larger analysis scheme in which at least 14 different ions are separated and identified. a. If you had already removed Ag 1+ , Hg 2 2+ , and Pb 2+ by adding HCl, which of the following ions could you separate, by causing them to precipitate, with the addition of H 2 SO 4 ? (Hint: H 2 SO 4 is a source of sulfate ions.) Ca 2+ Fe 3+ K 1+ Cu 2+ Al 3+ Sr 2+ NH 4 1+ Ba 2+ b. Choose one of the cations above and write the balanced net precipitation reaction that occurs. Format instructions are available at: Instructions for inputting precipitation reactions Answer is case sensitive. c. If you had already removed Ag 1+ , Hg 2 2+ , and Pb 2+ by adding HCl, which of the following ions could you separate, by causing them to precipitate, with the addition of H 2 CO 3 ? (Hint: H
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This note was uploaded on 09/24/2009 for the course CHEM 102 taught by Professor Zaowang during the Spring '08 term at N.C. State.

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Ch102 Postlab 04 Qualitative Analysis - CH102 Postlab 04...

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