Chem 4C: Laboratory Manual
- Page ID
- 431932
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\(\newcommand{\avec}{\mathbf a}\) \(\newcommand{\bvec}{\mathbf b}\) \(\newcommand{\cvec}{\mathbf c}\) \(\newcommand{\dvec}{\mathbf d}\) \(\newcommand{\dtil}{\widetilde{\mathbf d}}\) \(\newcommand{\evec}{\mathbf e}\) \(\newcommand{\fvec}{\mathbf f}\) \(\newcommand{\nvec}{\mathbf n}\) \(\newcommand{\pvec}{\mathbf p}\) \(\newcommand{\qvec}{\mathbf q}\) \(\newcommand{\svec}{\mathbf s}\) \(\newcommand{\tvec}{\mathbf t}\) \(\newcommand{\uvec}{\mathbf u}\) \(\newcommand{\vvec}{\mathbf v}\) \(\newcommand{\wvec}{\mathbf w}\) \(\newcommand{\xvec}{\mathbf x}\) \(\newcommand{\yvec}{\mathbf y}\) \(\newcommand{\zvec}{\mathbf z}\) \(\newcommand{\rvec}{\mathbf r}\) \(\newcommand{\mvec}{\mathbf m}\) \(\newcommand{\zerovec}{\mathbf 0}\) \(\newcommand{\onevec}{\mathbf 1}\) \(\newcommand{\real}{\mathbb R}\) \(\newcommand{\twovec}[2]{\left[\begin{array}{r}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\ctwovec}[2]{\left[\begin{array}{c}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\threevec}[3]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\cthreevec}[3]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\fourvec}[4]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\cfourvec}[4]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\fivevec}[5]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\cfivevec}[5]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\mattwo}[4]{\left[\begin{array}{rr}#1 \amp #2 \\ #3 \amp #4 \\ \end{array}\right]}\) \(\newcommand{\laspan}[1]{\text{Span}\{#1\}}\) \(\newcommand{\bcal}{\cal B}\) \(\newcommand{\ccal}{\cal C}\) \(\newcommand{\scal}{\cal S}\) \(\newcommand{\wcal}{\cal W}\) \(\newcommand{\ecal}{\cal E}\) \(\newcommand{\coords}[2]{\left\{#1\right\}_{#2}}\) \(\newcommand{\gray}[1]{\color{gray}{#1}}\) \(\newcommand{\lgray}[1]{\color{lightgray}{#1}}\) \(\newcommand{\rank}{\operatorname{rank}}\) \(\newcommand{\row}{\text{Row}}\) \(\newcommand{\col}{\text{Col}}\) \(\renewcommand{\row}{\text{Row}}\) \(\newcommand{\nul}{\text{Nul}}\) \(\newcommand{\var}{\text{Var}}\) \(\newcommand{\corr}{\text{corr}}\) \(\newcommand{\len}[1]{\left|#1\right|}\) \(\newcommand{\bbar}{\overline{\bvec}}\) \(\newcommand{\bhat}{\widehat{\bvec}}\) \(\newcommand{\bperp}{\bvec^\perp}\) \(\newcommand{\xhat}{\widehat{\xvec}}\) \(\newcommand{\vhat}{\widehat{\vvec}}\) \(\newcommand{\uhat}{\widehat{\uvec}}\) \(\newcommand{\what}{\widehat{\wvec}}\) \(\newcommand{\Sighat}{\widehat{\Sigma}}\) \(\newcommand{\lt}{<}\) \(\newcommand{\gt}{>}\) \(\newcommand{\amp}{&}\) \(\definecolor{fillinmathshade}{gray}{0.9}\)- Preface and Acknowledgments
- This page outlines the purpose of the Chemistry 004C laboratory experiments, stressing the need for understanding instructions and lecture materials for safety and efficiency. It also recognizes the contributions of faculty, stockroom supervisors, and undergraduates in developing the experiments and updating the manual to enhance clarity and safety procedures.
- Safety Rules for the Teaching Laboratories
- This page details essential laboratory safety rules mandated by the Laboratory Instructor and Chemistry Department. It emphasizes supervision, proper attire, and PPE usage to avert accidents. Students should consult healthcare providers for health issues, keep workspaces tidy, and promptly report incidents. Familiarity with Safety Data Sheets (SDS) for lab chemicals is also crucial for hazard preparedness.
- Laboratory Notebook and Reports
- This page covers the essentials for keeping an organized laboratory notebook and writing lab reports, emphasizing clear data entries and required sections. It stresses the importance of statistical analysis and appropriate handling of outliers, advocating careful evaluation and the q-test method for data validity. Furthermore, it addresses the significance of reporting figures accurately, in line with established precision rules and clarity conventions.
- 1: Electrochemical Cells (Experiment)
- This page covers electrochemical cells, focusing on their construction, the role of electrodes and salt bridges, and their application in batteries. It details a lab procedure where students measure voltages from half-cells like \( \ce{Cu/Cu^{2+}} \) and \( \ce{Fe^{3+}/Fe^{2+}} \), producing a Standard Reduction Table and using the Nernst equation for calculations.
- 2: Potentiometric Titrations (Experiment)
- This page covers potentiometric titration principles, specifically using permanganate ions to analyze \( \ce{Fe^{2+}} \) solutions. Key concepts include activity over concentration in the Nernst equation and details on titration setup, including electrodes. It highlights the 5:1 mole ratio at equivalence and methods for determining \( \ce{Fe^{2+}} \) concentration through potential changes.
- 3: Alcohol Analysis (Experiment)
- This page describes an experiment using redox titration to measure alcohol content in a solution, highlighting the roles of sulfuric acid and potassium dichromate in ethanol oxidation. It explains the refluxing method to prevent vapor loss, the preparation of ferrous ammonium sulfate as a titrant, and the use of diphenylamine sulfonate as an indicator.
- 4: Chemical Kinetics - The Iodine Clock Reaction (Experiment)
- This page outlines the kinetic study of iodide ion oxidation by peroxodisulfate, emphasizing rate laws via initial rates and highlighting the significance of rinsing glassware to prevent contamination. It details an experimental design using a starch indicator to measure reaction rates while controlling ionic strength, focusing on factors like concentration and temperature.
- 5: Inorganic Qualitative Analysis (Experiment)
- This page covers qualitative analysis in analytical chemistry, focusing on cation identification through systematic methods like precipitation reactions and diagnostic tests. It discusses cation groups, safety precautions with toxic reagents, and techniques for separating and identifying cations.
- 6: Preparation of Structural Isomers of a Metal Complex (Experiment)
- This page details two laboratory experiments focusing on cobalt(III) coordination compounds. The first experiment synthesizes the trans complex \(\ce{trans-[Co(en)2Cl2]Cl}\) using ethylenediamine, emphasizing safety and the potential for isomer synthesis. The second experiment involves separating cis and trans isomers, studying the kinetics of the trans complex's aquation reaction using spectrometry.
- 7: FT-IR Spectroscopy (Experiment)
- This page covers Fourier Transform Infrared Spectroscopy (FTIR) for analyzing organic molecules by their infrared absorption. It details an experiment using common organic solvents to explore vibrational modes and identify functional groups. Additionally, it outlines activities for students to identify polymers used in everyday products, focusing on infrared spectral analysis.