Lectures 1 and 2 CHE 1316

Lectures 1 and 2 CHE 1316 - Techniques

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Introduction for CHE 1316 Policies and Objectives
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Laboratory Measurements &  Techniques Lectures—basic principles of chemical  measurements and usage to make accurate  determinations of chemical species Lab Lectures—technique demonstrations and  experimental techniques applicable to the  current experiment   Laboratory—acquire skills needed to perform  accurate chemical measurements
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Course Grade—1050 total  points Four major exams (including the final), each  worth 100 points Six lab reports, each worth 100 points Lab notebook, worth 100 points Prelab test—best five out of six Grade %= ( Σ  major exam grades +                                       Σ  lab grades +  Σ  5 prelab  tests                              + notebook  grade)/1050  Drop one major grade (either lab or exam)
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Books and Laboratory manuals-- Required Busch, Busch, and Gipson,  Laboratory  Measurements and Techniques   Laboratory notebook—Pearson Custom  Laboratory Notebook
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Books and Laboratory manuals-- required Skoog, West, Holler & Crouch,  Analytical Chemistry–An Introduction .     seventh edition 
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Other equipment Safety goggles Calculator Detergent (something like comet cleaner) Lab coat--optional
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Course Objectives Develop laboratory techniques and  skills necessary for making accurate  chemical measurements Study basic theory behind procedures  and calculation of results
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Course Objectives Organization and utilization of   laboratory time Record keeping skills
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Uses of classical quantitative  analysis techniques Research Quality control Medical diagnostics Forensics Environmental monitoring Public health (food, water,  pharmaceuticals)
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Types of Analytical problems- Classification Does a sample belong to a particular  group Is it real?
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Types of Analytical problems- Qualitative Analysis What are the constituents of the sample List of constituents or components
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Types of Analytical problems- Quantitative Analysis How much of each constituent is  present Sum of the Per cent of each component  should total 100%
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Types of Quantitative analysis Gravimetric Mass of constituent is used to  determine composition Constituent must be separated from  sample prior to weighing
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Types of Quantitative analysis Volumetric Based on volume of reagent used to  react with a constituent Reaction used must go to completion
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Types of Quantitative analysis Instrumental Determination based on the response of  a sensor (transducer) Usually faster, more expensive  (equipment outlay) Results depend on proper calibration
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