CHEM151_Lab_09

CHEM151_Lab_09 - GenChem Week 9 Today's Agenda: Develop the...

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GenChem Week 9 Qualitative Analysis Week one of a two-week experiment Today’s Agenda: ± Develop the problem. ± Perform first challenge: preparing a known. ± Discuss results. ± Perform second challenge: reactions of anions and cations. ± Develop a consensus on the correct values. ± Perform third challenge: perform test reactions. ± Design an analysis scheme.
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GenChem As you’ll recall, one of the central goals of Chemistry is to analyze chemical substances. Detection: Does the sample contain substance X? Identification: What is the identity of the substance in this sample? Central Goals and Questions Separation: How can the substances present in the sample be separated? Quantitation: How much of substance X is in the sample? Which of these have we investigated?
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GenChem Public hearings slated on Rosemont mine plan GARRY DUFFY Tucson Citizen Consider the metal-extraction industry:
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GenChem What will the Rosemont Mining Company need to know before investing their time, money and political capital in this project? What valuable metals can they mine? & How much?
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GenChem For this experiment we’ll ignore the “how much” question and focus on “what’s there”. The Problem put to your group is to develop an analysis scheme to determine the presence of selected metal cations in an ore sample.
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GenChem 0.18 3.01 49,445 0.12 0.015 0.47 11.53 492,727 Total 0.17 2.96 39,507 0.12 0.015 0.46 11.29 366,607 Probable 0.19 3.22 9,938 0.14 0.015 0.5 12.25 126,120 Proven TCu% NSR $/t Ktons Ag oz/t Mo% TCu% NSR $/t Ktons Oxides >= 1.77 $/ton NSR Sulfide >= 3.29 $/ton NSR Cutoff Classification ROSEMONT MINERAL RESERVES How do you propose to identify what metals are present? The identification needs to be based on a property or properties that differentiates one metal from another ( differentiating characteristic ) Let s think!
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GenChem What do you know about metals? As a group, come up with a list of properties. They’re all elements.
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This note was uploaded on 06/12/2008 for the course CHEM 151 taught by Professor Staff during the Spring '08 term at Arizona.

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CHEM151_Lab_09 - GenChem Week 9 Today's Agenda: Develop the...

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