Chemistry 123 - General Chemistry IIIFall 2010 • Instructor: Dr. Jeffrey A. Hurlbut • Office: CB 388 • Office Hours: 11:30 - 1:30 Tu, Th • Office Telephone Number: 650-2242 • Final Exam: 8:00 - 10:00 am Tuesday, 12/7/2010
Introductory Material • The lecture notes are in PowerPoint format. You need PowerPoint to look at & print the notes. If you do not have Microsoft Office then: 1) obtain a free compatible program such as OpenOffice on the web; 2) obtain a free PowerPoint viewer from the Microsoft web site; or 3)access the notes from a campus computer lab that has PowerPoint. You also need Adobe Reader which is free: http://www.adobe.com/products/reader/ • I suggest printing lecture notes in "handout," three per page, BW format; this allows space for writing. These lecture notes, along with the text & homework are the main source of exam questions. • Course Requirements:1) C grades in chemistry 121 & 122; 2) Text:General Chemistry, 9th Edition by Ebbing & Gammon (2009); 3) dedicated lab notebook; 4)attendance in lecture and lab; & 5)passing grade on the lab safety quiz before12 noon, Thursday 9/30.
Internet Addresses • Note: There are three ways to get most class material - 1) direct address; 2) my web site; & 3) Blackboard. The direct internet addresses are given below. • Email:Hurlbut@chem.wwu.edu Please use carefully – I have over 100 students per quarter, and I can only devote a few hours per week to online questions. It would help if you place your class hour in the subject line. • Lecture Notes: www.chem.wwu.edu/hurlbut/ (all lower case) • Online HW:cobalt.chem.wwu.edu/JHurlbutHW/lessons.htm • Prelab & Labs:cobalt.chem.wwu.edu/labs/Chem123/Default.htm • Blackboard:http://courses.wwu.edu • Lab Safety Quiz:cobalt.chem.wwu.edu/SafetyQ/GCqlink.htm
Lecture Material • Chapter 15 – Acids & Bases • Chapter 16 – Acid-Base Equilibria - Exam 1: Ch 15 & 16 and Labs: Intro & Acid Labs - Online Assignment #1 • Chapter 17 – Solubility & Equilibria • Chapter 18 – Thermodynamics & Equilibria - Exam 2: Ch 17 & 18 and Labs: Ni Complex - Online Assignment #2 • Chapter 19: Electrochemistry - Online Assignment #3 - Due before 11:30 pm Thursday 12/2/2010 • Final Exam: Cumulative Ch 15-19 & All Labs (8-10 AM 12/7)
Homework • There are two types of assigned homework: 1. End-of-Chapter Homework: The second page of each lecture note series contains a list of suggested homework problems. Do these by the time I finish the lecture over that section. I will devote lecture time to answering questions over these. These will not be graded or turned in, but they are important & may appear on the exams. 2. Online Homework: The first three assignments will be graded and will count as 13 % of your grade. You can access these at: cobalt.chem.wwu.edu/JHurlbutHW/lessons.htmAnswer them when you have mastered the material. There is no time limit except for the deadline which will be announced in lecture as well as given on Blackboard. The deadline is firm, and NO excuses will be accepted if you miss the deadline. Finish these well before the deadline. Make a copy of these the first time you access them for study purposes; they will be offline after the deadline. Drop by my office if you have questions on the online homework - BUT you must have your work neatly displayed, labeled and with units. • Assignment #1 Lesson (Chapters 15 & 16) • Assignment #2 Lesson (Chapters 17 & 18) • Assignment #3 Lesson (Chapter 19) [deadlines are firm for online HW]
Grading Exam #1 - 20%: Ch 15 & 16 and Labs: Intro & Acid ~ 1 week after Ch 16. Exam #2 – 20%:Ch 17 & 18 and Lab: Ni Complex ~ 1 week after Ch 18. Final Exam – 30%: Cumulative over chapters 15 through 19 and all labs. 8-10 AM Tuesday, 12/7/2010 Lab – 17%: See the slide on the lab. Online Homework – 13%: Deadlines are Firm.
Laboratory Safety Quiz Mandatory safety quiz - a tutorial and the quiz are available at: http://cobalt.chem.wwu.edu/SafetyQ/GCqlink.htmThe login is your student ID without the “W” and without the numbers after the last dash. Password = last two ID digits & first two letters of last name. Example: W00182234-11 Jack Smith ID = 00182234 & PW = 34Sm A 30 minute time period starts when you enter the lab quiz. You can take it the next offering; however, the passing grade becomes higher. Passing grades: 1st = 80% (until 5 PM 9/24); 2nd = 84% (5 PM 9/24 to 5 PM 9/28); and 3rd = 88% (5 PM 9/28 to 12 NOON Thursday 9/30/2010). You must pass this lab safety quiz in order to continue in the course.Note: you need to study the tutorial slides before starting the 30 minute quiz.
Laboratory • Lab Safety: Pass Lab Safety Quiz. Mandatory; see the previous slide. • Requirements are: goggles always on; no short pants, short skirts, or open shoes; no food or drinks in the lab; all beakers/flasks must be labeled; clean entire work area before leaving. • General Information: The experiments were selected to emphasize a variety of analytical concepts and techniques. Much of the work will be done independently. You will be graded over your calculations, accuracy, precision, significant figures, organization, grammar & notebook. Information is at: gold.chem.wwu.edu/labs/Chem123/Default.htmDownload, carefully read, and bring all introductory lab material with you to the first lab – including your dedicated, bound, page numbered (by hand is OK) lab notebook (9.75” x 7.5” recommended). • Lab Notebook: Hard-bound(9.75” x 7.5” recommended) - Name on outside • A brief procedure must be completed and in your notebook by the beginning of each lab (including the 1st lab). Detailed instructions concerning the lab notebook are in the introductory lab material - you must read this material before the first lab. Notebook will be graded. • Lab times are firm & you must be done & out 10 min before the last hour.
Laboratory • Lab Notebook Continued: Your notebook should contain: 1. Pre-lab. Before the lab: complete any pre-lab & write-up; place in your notebook; this includes a) title, b) any prelab calculations; c) shortpurpose, d) an outline of the procedures, and e) room for addition of graded result sheet. 2. Data & Observations. During the lab, you will record observations, dates, data, and calculations in your notebook in ink. Be sure to carefully read the introductory material for comments on SF, units, dates, examples, etc. Do not erase - cross out with a single line, and do not place data on temporary paper; data is always to be labeled and entered directly into your lab book. 3. Data & Results Summary Sheet. Obtain & fill in Data & Results Summary Sheet for each experiment. Turn this sheet in the next lab period (the F- lab is due at the end of that lab) . I will grade and return the sheet the following lab period; attach this in your notebook. Also write a 1-2 sentence summarizing the results for each lab. • Lab Grading: Each Data & Results Summary Sheet will be graded. The grade will include: calculations, accuracy, precision, completeness, grammar, significant figures (SF), etc. The lab notebook will be graded.
Laboratory - Lab Schedule DateExperiment 9/27-9/29 Buret, Volumetric Pipet , & pH Exercises: Technique, SD & RSD. [1 week lab; Buret & Pipet - Individual, pH - Partner 15 pts]. 10/4-10/6 Determination of a Weak Acid: Volumetric Analysis. 10/11-10/13 [2 week lab; Individual;20 pts]. 10/18-10/20 Titration Curves & the Ka of Acetic Acid. [1 week lab; Done with Partner; 15 pts]. 10/25-10/27 Analysis of a Nickel Complex: Volumetric & Spectrophotometric Anal. 11/1-11/3 [2 week lab; Ethylenediamine = Individual; Ni = Partner; 20 pts]. 11/8-11/10 Chemistry of Wine: Volumetric (Redox) & Spectrophotometric Anal. 11/15-11/17 [2 week lab; Free SO2 (wk 1); Alcohol (with partner) & Acid (wk 2) ; 20 pts]. 11/22-11/24 Thanksgiving; No Lab. 11/29-12/1 Fluoride Determination using ISE: Electrochemistry & Buffers. [1 week lab; Done in groups; 10 pts]; Clean-up; Turn in lab & notebooks.
Desired Chemistry 123 Goals, pg 1 • Be able to describe and explain the chemical behavior of acids and bases in aqueous solutions. • Be able to predict the effects of temperature, pressure, concentration and energy flow on the dynamic behavior of chemical and physical systems. • Understand how equilibrium concepts apply to chemical systems (acids, bases, slightly soluble ionic compounds, and complex ions). • Be able to describe, explain and calculate the thermodynamic quantities of enthalpy, entropy, and free energy. • Describe and characterize oxidation-reduction electrochemical reactions. • Understand and use the relationships between cell potential, free energy and the equilibrium constant.
Desired Chemistry 123 Goals, pg 2 • Correctly use and manipulate mathematical models involving thermodynamic relationships; electrochemical systems; and equilibria of acid-base reactions, complex ions & slightly soluble ionic compounds. • Use laboratory generated data to reach sound conclusions about chemical phenomena. • Understand and demonstrate safe laboratory practices. • Record experimental procedures and results clearly and effectively in a laboratory notebook. • Meaningfully connect laboratory activities to models and concepts learned in lecture. • Understand, calculate and use precision and accuracy involved with experimentally obtained data. • Develop good analytical laboratory techniques so that volumetric, gravimetric, spectrophotometric & electrochemical procedures are performed with precision and accuracy.