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Chemistry 2046: College Chemistry 2

Section 57281 Summer, 2014 Ybor City Campus

Instructor: Dr. Bert Rubini http://content.hccfl.edu/faculty/bertrubini/home.htm

Office: YFAC 206 Telephone: 259-6089 e-mail: [email protected]

Meeting Time: Tues/Thurs, 8:00 to 10:10 AM, Room YBOR 215

Textbook: Chemistry: A Molecular Approach by N. Tro, 2nd

Ed.

Chemistry 2046 is a continuation of 2045, an introduction to the basic principles of

chemistry. All students enrolled in this course need to be aware that pre-requisites for the class include

college algebra (MAC 1105 or equivalent) including basic algebra and logarithmic functions, co-enrollment

in 2046L laboratory, and the first semester portion of this class, CHM 2045. It is assumed that all students

in this class have a background in chemistry.

Your grade in the class will be the average of your grades on the exams; each of the four hourexams and the cumulative final are weighted equally (100 points each). There will be no make-up

exams given. If you are absent for an exam (with a valid, documented excuse), the final exam will be

counted double in calculating your final grade. If you do not have a documented excuse (ie., a doctor's

note), YOU WILL RECEIVE A ZERO ON THE EXAM.

You may not drop an exam; however, the final exam may replace your lowest test score. If your

grade on the cumulative final is higher than any of your tests, the lowest test score is disregarded and the

final exam grade is entered twice for the calculation of your class average. You cannot under any

circumstances drop or replace the final exam.

I will not collect or grade homework assignments, but you should do the recommended problems

in the back of each chapter for the sections we cover; a list of these recommended problems is provided on

my web site. Your goal in the course should be to acquire a basic understanding of each of the topics listed

on the class schedule, including the ability to solve problems with respect to these subjects. Aside from

attendance on exam dates, attendance is not a component of your grade in this course.

Grading Scale: Dr. Rubini’s Office Hours for Summer 2014: 90-100% A by appointment .

80-89% B

70-79% C60-69% D

< 60% F

You are expected to read the assigned reading material before coming to class; in my lectures, I

will assume that everyone has already read the material and has a basic or preliminary understanding of the

concepts. The purpose of coming to lecture is to reinforce your knowledge of the material you have

already read.It is very important to practice for the exams by working as many problems as possible. Although

the answers to some of the problems are given in your book, you should make a serious attempt to solve a

problem before you look at the answer; understanding a solution and being able to solve a problem are very

different! The questions on the exam will be very similar to the questions that you are asked to work as

homework. The best way to study and make a good grade in the class is to keep up with your reading and

work all the problems. Please feel free to contact me during office hours, or by appointment, to discuss any

problems you may have.



Class Policies: you should read and understand the following important policies!!♦ Any student who does not sign in during the first 10 calendar days of the term will be considered a

non-attendee and will automatically be dropped from the course and the co-requisite lab. It is NOT

POSSIBLE to re-register for the course if you are dropped for non-attendance. It is YOUR

RESPONSIBILITY to sign in to the course to preserve your spot.

♦ You are responsible for any announcements made in class, even if you are not present when the

announcement is made! If you miss class, it is your responsibility to catch up on any material you missedincluding class announcements, such as changes in test dates, modifications to assignments, etc.

♦ Your grade will be calculated EXACTLY as indicated on this syllabus. There is no extra credit

for the class. You cannot re-take an exam if you do poorly on it. I do not add points if you are "close" to

the next grade.

♦ All students are graded equally in this class. There will not be special consideration or exception

given to ANY students, including those who are about to graduate, who are applying for graduate school,

who work outside of class, who are taking a large class load, who have transportation problems, etc. You

will be graded exactly the same as all other students in this class, regardless of your situation.

♦ I reserve the right to keep any exams. You may see your exam, and ask any questions, but you

may not necessarily KEEP it or copy it. (Generally I return all exams except exam 4 and the final exam).

♦ I will keep all assignments and exams for one semester following the course, after which they will

be discarded. If you wish to see or pick up a graded paper, you must collect it during the following

semester.♦ Office hours are first come, first served. If you come to my office and there are other people

waiting, you may not get to see me during that hour! My office hours get very busy around exam time,

don’t wait until the last minute to come and ask questions or you may not get the opportunity!♦ Please remember that there are NO make-up exams for the class! If you miss an exam for any

reason, the final will serve as your make-up. If you know that you will be missing an exam, you can

arrange to take the exam early if you give me at least one week advance notice. ABSOLUTELY NO

ONE WILL TAKE AN EXAM AFTER THE CLASS HAS TAKEN IT. This includes students with

disabilities, who take the exams in the testing center - you must still begin the exam at the same time as

your class.♦ You MAY NOT take the exam in the testing center unless you have a valid, documented

indication of a disability – it is required that you provide documentation from the Office of Services to

Students with Disabilities at the beginning of the term. Contact the Office of Services to Students with

Disabilities for more information – 813-253-7757.

♦ If you are late for an exam, you WILL NOT be given extra time to take the exam! Exams will be

collected promptly at the end of the class period, regardless of your arrival time.

♦ On multiple choice questions, you are graded EXCLUSIVELY on which choice you circle. If you

do the work correctly on your scrap paper, but circle the wrong answer, you still get the question wrong! If

you choice is unclear, you will not receive credit. It is NOT required to show work on multiple choice

questions, unless otherwise indicated.

♦ If you give more than one answer to an exam question, you will not receive credit (or partial

credit) for the question (even if one of your answers is right). If more than one answer is given, the

question will be counted as incorrect . It is NEVER to your advantage to put two or more answers to a

question.

♦ I will provide a PERIODIC CHART and any SCRAP PAPER that you need for the exam. You

may not use your own chart or paper. You must submit all scrap paper when you with the exam, including

unused sheets.

♦ Cell phones or internet-capable devices may not be used during an exam. Please do not leave

them out on your desk while taking an exam. Please put these devices away in your bookbag, purse or

pocket.

♦ Don’t spend an inordinate amount of time on any single question on the exam! If you are

spending a long time on one question, it will probably cost you a greater number of points on other

questions. I have often seen students spend 15 or 20 minutes on one question (worth 5 points) and then not

have time to finish 3 or 4 other questions as a result! It is always a good idea to skip over a question if you

are unsure how to complete it, then come back and finish it later.



Tentative Class Schedule -- PLEASE NOTE THAT THESE EXAM DATES ARE TENTATIVE!!

Week of Subjects Covered Chapter

May 20 Intermolecular Forces and Physical Properties Chapter 11

Definition of molality, mole fraction

Intro to Colligative Properties Chapter 12

May 27 Colligative Properties (Freezing Point Depression;

Boiling Point Elevation Vapor Pressure Lowering)

Colligative Properties of Ionic Solutions Chapter 12

June 3 EXAM ONEEXAM ONEEXAM ONEEXAM ONE (Tuesday, June 3, Chapters 11 & 12)

1st and 2nd order rate laws; Integrated Rate Laws Chapter 13

June 10 Rate Laws continued, Integrated Rate Laws and Temp effects Chapter 13

Chemical Equilibrium; Equilibrium Constant expressions Chapter 14

June 17 Calculating Keq, calculating equilibrium concentrations Chapter 14

EXAM TWOEXAM TWOEXAM TWOEXAM TWO (Thursday, June 19, Chapters 13 & 14)

June 24 Equilibrium in Acid/Base Chemistry; pH Chapter 15

note: the last day to withdraw without a grade is 6/27/2014!

July 1 pH and Ka continued Chapter 15

Buffers Chapter 16

Solubility and Solubility Products Chapter 16

July 8 EXAM THREEEXAM THREEEXAM THREEEXAM THREE (Tuesday July 8, Chapters 14 - 16)

Electrochemical Cells (voltaic and electrolytic), Cell Notation Chapter 18

July 15 Cell Notation; Electrochemical Cell Potentials. Nernst Equation Chapter 18

Entropy, Enthalpy and Gibbs’ Free Energy –what determines Spontaneity? Chapter 17

July 22 Finish Chapter 17

EXAM FOUREXAM FOUREXAM FOUREXAM FOUR (Thursday, July 24, Chapters 18 & 17)

FINAL EXAMFINAL EXAMFINAL EXAMFINAL EXAM: Thursday, July 24 – cumulative !



Throughout the term there will be documents to download from my web page. You can

access these files by going to www.hccfl.edu, clicking on the “HCC Directory” link at thevery top of the page, toward the right side. Type in my name (“Rubini”) from thedirectory page and you will see my contact information as well as a link to my web site.

There is a link to lab handouts at the top of my web site.You can also access the site directly, the address is:

http://content.hccfl.edu/faculty/bertrubini/home.htm

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Below are the course objectives for CHM 2046, as approved by Hillsborough Community College:

At the end of this course, the student will be able to …

1. Define and understand the types of intermolecular forces present in inorganic andsimple organic molecules; describe and predict the intermolecular forces for a particularcompound; predict the effects of such forces on the physical and chemical properties ofthe compound.

2. Perform quantitative analysis of the colligative effects of a solute in a solution,including effects on boiling point, melting point and osmotic pressure.

3. Describe the variables which affect the rate of a chemical reaction; use experimentaldata to determine a rate law; use rate laws to calculate the relationship betweenconcentration and time for a chemical reaction.

4. Define and understand the equilibrium constant for a chemical reaction, and therelated concepts of LeChatlier's Principle and Equilibrium shift. Use experimental datato calculate values for an equilibrium constant and equilibrium concentrations.

5. Use the pH scale and pH relationships to determine hydrogen ion concentrations,

hydroxide ion concentrations, pH or pOH for a solution, based on experimental data;perform buffer calculations for acid/base mixtures.

6. Use the appropriate equilibrium constants to determine solubility and/or precipitationpoint of an inorganic solute, in water or a solution.

7. Understand the thermodynamic variables of enthalpy change, entropy change andGibbs' free energy change, and how they affect the spontaneity of a chemical reaction;predict the spontaneity of a reaction using the appropriate thermodynamic data.

8. Define and describe the types of electrochemical cells, and their individualcomponents; predict the potential of an electrochemical cell under standard and non-

standard conditions; use the quantitative relationship between current, charge and timeto perform calculations.

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