lecture 2

lecture 2 - CHEM 6BL Experiment 2: Volumetric Analysis of...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
CHEM 6BL Experiment 2: Volumetric Analysis of An Organic Acid Instructor: Dr. S. Berniolles Page 1 1 Chemistry 6BL Lab/Course Schedule Chemistry 6BL Lab/Course Schedule Prelab Expt. 1 Prelab Expt. 2 Safety Exam/ Expt. 1 (filtration/drying)/ Expt. 2 prep work End Expt.1/ Expt. 2 (Parts I- II) 1st lab 2nd lab Organic Acid Analysis (Expt. 2) Oct. 6 Prelab & Report Due Dates Lab Schedule Lab Period Lecture & Exam Schedule Date 2 Safety Exam Schedule Reminders Safety Exam Schedule Reminders z If you failed or missed the safety exam: “make- up” on Thursday, Oct. 9, 7 am in York 2722 (Safety Contact: Sheila Kennedy 858-534-0221) z There will be NO MAKE-UP OF THE MAKE-UP!!!!! NO EXCEPTIONS!!!!!!! z Review session on Wednesday, Oct. 8, Natural science Building 3211, 6-7:30 PM 3 Lab Report Format Lab Report Format z Abstract z Introduction z Experimental ( Prelab Procedure) z Results (Data, Obs., Calcs. Raw Data) z Discussion See Lab Manual- Gen. Info- P. 18-19 + Lab Report/Excel Guides posted on WebCT
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
CHEM 6BL Experiment 2: Volumetric Analysis of An Organic Acid Instructor: Dr. S. Berniolles Page 2 4 Analytical Chemistry Analytical Chemistry Fundamental branch of chemistry that involves either: - Identifying the components that make up a compound (qualitative analysis) - Determining the specific amount of a compound (quantitative analysis) 5 Experiment 2: Volumetric Analysis Experiment 2: Volumetric Analysis z Known volumes of known concentrations reacted with known volumes of unknowns From reaction equation, relate to moles z Common analytical technique: Titration (use of a buret) z Experiment #2 uses Volumetric Analysis 6 Volumetric Analysis: Titration Volumetric Analysis: Titration z Titration with a Buret Titrant : known concentration of reactant - Volume delivered measured in buret Analyte : known volume of unknown - Need to determine concentration z Need “ indicator for acid-base titrations Starting Volume Ending Volume Titrant Analyte
Background image of page 2
CHEM 6BL Experiment 2: Volumetric Analysis of An Organic Acid Instructor: Dr. S. Berniolles Page 3 7 Volumetric Analysis: Titration Volumetric Analysis: Titration z Titrations Acid-Base titrations ( Exp’t #2 ) Redox titrations ( Exp’t #4B ) z Looking for the “ stoichiometric point ”: When stoichiometric amounts of the titrant and the analyte have reacted Also known as “ equivalence point z Not endpoint ”= indicator color change 8 Volumetric Analysis: Titration Volumetric Analysis: Titration z Titration with a Buret: DON’T FORGET TO RECORD INITIAL VALUE of titrant before titrating V delivered = ending V – starting V z Your TA can show you how to hold valve Starting
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 10

lecture 2 - CHEM 6BL Experiment 2: Volumetric Analysis of...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online