CHEMISTRY 351 CAL ASSIGNMENTS FALL 2024 Last modified:

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Follow the link for more information about the CHEM351F24 CAL tutorials

Chem 351 CAL assignments:

• There will be five graded assignments of equal weight (4% each) for completion during CHEM351F24.
• The dates and content of each assignment are provided below.
• You should always assume that the coverage is cumulative (i.e. content from a previous assignment is expected in later assignments).
• These assignments should ideally be completed in your registered tutorial time during the week specified (synchronous activity).
• Assignments are to be written under exam conditions.
• All the assignments have a 50 minute time limit for completion.
• CAL tutorial section times

ABSENCES

• You only need to report absences during assignment weeks.
• If you for some reason cannot attend during an assignment week, you should fill out the make-up tutorial assignment request form.
• Only legitimate reasons for missing your assignment will be considered for a make-up assignment (i.e. excuses like "it was my birthday" or "I needed to help do yardwork" aren't acceptable).
• Given the size of the course and limited resources,
• Make-up assignments can only be rescheduled for the week of the assignment during scheduled Chem 351 tutorial times.
• Under normal circumstances, students are limited to ONE request per semester.
• In the event that it is not possible to complete a make-up assignment for a legitimate reason, an excused absence will be awarded, see the course outline for more details.
• Students are strongly encouraged to report missed coursework within 48 hrs.

MOODLE is scheduled to be made active first day of tutorials (Tu Sept 10th 2024) for CHEM351F24.
As soon as it is, you will be notified. The most important preparation materials are from the etext, not Moodle. Links are provided below for each CAL assignment.

"Exam conditions" means that you will be allowed to use a calculator and/or model kit and have access to a periodic table and spectroscopy data tables if required. No other resources should be used while completing an assignment. These are the same resources that are allowed in examinations (i.e. midterm, final). It also means, that like examinations, you should not interact in any way with another student while completing the assignment. Anyone found breaking these rules will be awarded a zero and it will be reported as academic misconduct.

If you have any doubt as to the interpretation of the statement about "exam conditions" talk to your instructor or the course coordinator before taking a risk!

The questions in the assignments range from "easy" introductory / fundamental questions upto levels of a similar type to those of Chem 351 examinations and the practice problems we will be providing for discussion in CAL etc. This could include synthesis problems and structure determination problems.

Link to general information about the CAL tutorials

If you have any further queries about these assignments, please contact the CAL coordinator, Dr Ian Hunt.

• Review the course website and D2L especially laboratory materials and tutorial materials etc.
• Get logged in to Moodle (UofC credentials are required)
• Once into the Moodle Chem 351, review the document that describes how Moodle works and the key features.
• Complete the "Moodle User Policy Quiz" (note that a 100% score is required before you can get access to other Moodle materials)
• Then work through the "Organic Structure Drawing Tool 101" training exercise (it is not for coursemarks, it trains you to use the tool which is an important part of the CAL materials, 75% minimum score required)
• When you finish, that you should start the review / preparation for the first assignment CAL351.A1 (see below).

Weeks 3-4, CAL 351.A1: ORGANIC FOUNDATIONS 1

CAL 351.A1 covers:

a. basic functional group recognition, the basic rules of organic nomenclature and the application of these rules to the nomenclature of alkanes, alkenes, alkynes and alkyl halides.
b. structure and bonding (lecture topics : e.g. atomic structure and properties, bond types, bond properties, VSEPR etc.)
c. the language of organic chemistry (lecture topics : e.g. using arrows correctly, structure diagrams, language (definitions and terminology) etc.)

While much of this b & c material should be review from Chem 201/203, it is important to have a good, solid background knowledge to build from.
For most though, much of the nomenclature in 351.1a should be new. This is likely where your preparation should focus..

In order to be ready to complete the assignment, you should work through the CAL materials and / or the appropriate material from the etext and/or lecture notes as you require.

a. The following materials on NOMENCLATURE are recommended:

• Our own WWW site: Basic Organic Nomenclature, sections 1-9 (1-5 general background plus 6 alkanes, 7 alkenes, 8 alkynes and 9 alkyl halides)
  

b. The following materials on STRUCTURE and BONDING are recommended:

• Organic Chemistry On-Line Learning Center : Atoms, electrons and orbitals, electronegativity, bonding, VSEPR

c. Moodle self assessments 351.1a and 1b are recommended to check your preparation for this assignment once you have worked through the review materials.

PRACTICE & REVIEW = week 2 Sept 9-13 & week 3 Sept 16-20 2024

ASSIGNMENT to be completed during scheduled tutorial session Week 4 Sept 23-27 2024, 50 minute time limit.

Weeks 5 & 6 CAL 351.A2: ORGANIC FOUNDATIONS 2

CAL 351.A2 expands on assignment 1 and covers:

a. application of basic nomenclature rules to alcohols, thiols, ethers, amines, aldehydes and ketones.
b. structure and bonding (e.g. hybridisation, resonance, formal charges)

In order to be ready to complete the assignment, you should work through the CAL materials and / or the appropriate material from the course textbook / etext as you require. You should also review and learn from your mistakes in CAL 351.A1.

a. The following materials on NOMENCLATURE are recommended:

• Our own WWW site: Basic Organic Nomenclature, sections 10-15 (alcohols, thiols, ethers, amines, aldehydes and ketones)
  

b. The following materials on STRUCTURE and BONDING lecture topics are recommended:

• Organic Chemistry On-Line Learning Center : hybridisation, hydrocarbon structure and bonding : alkanes, alkenes and alkynes; resonance ( more resonance here...), formal charges
  

c. Moodle self assessments 351.2a and 2b are recommended to check your preparation for this assignment once you have worked through the review materials.

PRACTICE & REVIEW = week 5 Oct 1-4 2024

ASSIGNMENT to be completed during scheduled tutorial session Week 6 Oct 7-11 2024, 50 minute time limit.

Weeks 7 & 8 CAL 351.A3:ORGANIC FOUNDATIONS 3

CAL 351.A3 expands on assignments 1 & 2 and covers:

a. application of basic nomenclature rules to carboxylic acids, esters, amides, acyl halides, acid anhydrides, nitriles, benzenes and stereochemistry.
b. curly arrows (for drawing mechanisms, deriving resonance structures etc.) (lecture)
c. acidity and basicity (lecture)
d. thermodynamics and stability (lecture)
e. isomerism (lecture)
f. properties of alkanes and cycloalkanes (lecture)

In order to be ready to complete the assignment, you should work through the CAL materials and / or the appropriate material from the course textbook as you require. You should also review your mistakes in previous CAL assignments.

a. The following materials on NOMENCLATURE are recommended:

• Our own WWW site: Basic Organic Nomenclature, sections 16-23 (carboxylic acids, esters, amides, acyl halides, acid anhydrides, nitriles, benzenes and stereochemistry.)
  

The following materials on STRUCTURE, BONDING and FUNCTION related to lecture topics are available in the online etext:

• bonding in alkanes, alkenes and alkynes
• formal charges
  
• isomers
• properties of alkanes and cycloalkanes
• acidity and basicity of organic compounds
• acidity and basicity
• structure and pKa
• acidity ladder of pKa
• curly arrows

b. Moodle self assessments 351.3a and 3b are recommended to check your preparation for this assignment once you have worked through the review materials.

PRACTICE & REVIEW = week 7 Oct 14-18 2024

ASSIGNMENT to be completed during scheduled tutorial session Week 8 Oct 21-25 2024, 50 minute time limit.

Weeks 7 & 8 CAL 351.A4: SPECTROSCOPY

To be completed during scheduled tutorial session Week 12, Nov 25-29, 50 minute time limit..

CAL 351.A4 requires that you deduce the structure of a compound from its MS, IR, 13C and H-NMR.

• Note that on an examination you should be solving this type of problem in about 15-20 minutes !
• There are three levels to choose from EASY (max grade = 8 out of 10) or STANDARD (max grade = 10 out of 10) or HARD (max grade = 12 out of 10)
• You get to SELECT THE PROBLEM LEVEL FOR YOURSELF. Once you have select a problem you can't change the level.

In order to be ready to complete the assignment, you should work through the CAL materials and / or the appropriate material from the course textbook as you require.
Most importantly, there are interactive online spectroscopy problems in the Spectroscopy chapter of the etext that are strongly recommended as preparation for this assignment.

Suggestions of materials to review to help you understand the topics are:

1.  Read Solving Spectral Problems using the fragment approach

2.  Work through our interactive online spectroscopy problems for PRACTICE !

3.  Other WWW Materials:
Useful materials can be located at the following sites:

• An electronic Organic Textbook
• UCLA - Webspectra
• Notre Dame - Organic Structure Elucidation workbook

PRACTICE & REVIEW = week 10 & 11

ASSIGNMENT to be completed during scheduled tutorial session Week 12, Nov 25-29, 50 minute time limit.

Weeks 7 & 8 CAL 351.A5: ALCOHOLS, ALKYL HALIDES AND ALKENE and their REACTIONS

CAL 351.A5 continues to build on assignments 1-4 and also covers:

a. radical substitution reactions (halogenation of alkanes and related systems)
b. structure and properties of alkyl halides, alcohols, alkenes.
c. nucleophilic substitution reactions of alcohols, alkyl halides and related systems.
d. elimination reactions of alcohols, alkyl halides and related systems.

In order to be ready to complete the assignment, you should work through the CAL materials and / or the appropriate material from the course textbook as you require.

1.  Links to important materials in the Organic Chemistry On-Line Learning Center (but you should look at Ch4, Ch8 and Ch5 for the more general issues)

• Properties of Alcohols, Alkyl halides, and Alkenes
• Nucleophilic Substitution reactions
• Nucleophiles, Leaving Groups, Carbocations
• SN1 and SN2 reactions
• Nucleophilic substitution reactions of alkyl halides and alcohols
• Radical Substitution reactions
• Elimination reactions
• E1 and E2 reactions
• Elimination reactions of alkyl halides and alcohols

2.  Other WWW Materials:
Useful materials can be located at the following sites:

• Virtual Textbook (Michigan State University)

ASSIGNMENT to be completed during scheduled tutorial session Week 13 Dec 2-6 2024, 50 minute time limit.