Quiz 3 Winter 2016

[Chem_Mod]

I have posted the detailed midterm solutions on my class website at:
https://lavelle.chem.ucla.edu/class-websites/chem14b/

For week 9, Quiz 3 covers from page 76 in the course reader to the end of page 99.

In the organic textbook, Introduction to Organic Chemistry, it is:

Thermodynamics and Kinetics of Organic Reactions
Ch 4.1 to 4.4
Problems: 1-10, 23-40

Structure and Naming of Organic Molecules
Part 1: Hydrocarbons
Ch 1, Sections 1-6 and 11
Problems: 1-6, 9-17, 21-29

[Maisha 2L]

I have posted the detailed midterm solutions on my class website at:
https://lavelle.chem.ucla.edu/class-websites/chem14b/

For week 9, Quiz 3 covers from page 76 in the course reader to the end of page 99.

In the organic textbook, Introduction to Organic Chemistry, it is:

Thermodynamics and Kinetics of Organic Reactions
Ch 4.1 to 4.4
Problems: 1-10, 23-40

Structure and Naming of Organic Molecules
Part 1: Hydrocarbons
Ch 1, Sections 1-6 and 11
Problems: 1-6, 9-17, 21-29

Are these just the homework problems, or are they also the only problems important for the quiz?

[004569922]

Are we going to be required to know the structures of basic compounds such as Isoprene, Propyne, Carvone, etc.? Or will they be given to us?

[nikisepanj]

this entails that quiz 3 includes the enzyme part of kinetics, correct?

[Dahriel Aron 3A]

I was wondering if anything from the end of ch 15 will be on the quiz

[Chem_Mod]

I have posted the detailed midterm solutions on my class website at:
https://lavelle.chem.ucla.edu/class-websites/chem14b/

For week 9, Quiz 3 covers from page 76 in the course reader to the end of page 99.

In the organic textbook, Introduction to Organic Chemistry, it is:

Thermodynamics and Kinetics of Organic Reactions
Ch 4.1 to 4.4
Problems: 1-10, 23-40

Structure and Naming of Organic Molecules
Part 1: Hydrocarbons
Ch 1, Sections 1-6 and 11
Problems: 1-6, 9-17, 21-29

Are these just the homework problems, or are they also the only problems important for the quiz?

Both

[Chem_Mod]

Are we going to be required to know the structures of basic compounds such as Isoprene, Propyne, Carvone, etc.? Or will they be given to us?

Given the IUPAC name you can figure out the structure.

Given the common name you will not be expected to know the structure.

[Chem_Mod]

this entails that quiz 3 includes the enzyme part of kinetics, correct?

Focus on what my lecture notes covered and the homework problems I assigned.

[Chem_Mod]

I was wondering if anything from the end of ch 15 will be on the quiz

Yes. See lecture notes in course reader from page 76 onwards.

[Masahiro Yabe 2H]

I was also wondering whether the stuff that we didn't cover in the last chapters are going to be on quiz 3, such as arrhenius equation.

[mh2019]

So are functional groups not on the quiz?

[Nicole Filbert 1D]

When being asked to name a compound, are we going to have to give the IUPAC and common name? Or, is just the IUPAC name okay? (For the final also?)

[Sophia Xu 3F]

Does the quiz cover functional group material?

[Chem_Mod]

Please read the announcement: "Quiz 3 covers from page 76 in the course reader to the end of page 99."

Typically IUPAC names are asked. If question does not specify then IUPAC or common name is fine.

[Chem_Mod]

I was also wondering whether the stuff that we didn't cover in the last chapters are going to be on quiz 3, such as arrhenius equation.

Perhaps you meant to ask:
Are the Kinetics topics that were not covered in quiz 2, going to be in quiz 3? For example, the Arrhenius equation.

Answer: Yes

See pages in original post at top of this thread.

[Cynthia Anderson 3A]

Some of the homework problems cover trans- and cis-, do we need to know how to do these even though they weren't covered in lecture?

[Ulysis Baal 4J]

Does the quiz cover functional group material?

No, functional groups are not covered from pages 67 to 99.

[Kimberly Wagas 1H]

Will we have to know alkyl and aryl carbanions for the quiz?

[Chem_Mod]

Some of the homework problems cover trans- and cis-, do we need to know how to do these even though they weren't covered in lecture?

Geometric isomers are not in quiz 3.

[Chem_Mod]

Will we have to know alkyl and aryl carbanions for the quiz?

No.

[Chem_Mod]

Alkenes and alkynes could be on quiz 3 as part of naming.
But geometric isomers (CIS/TRANS Z/E) will not be on quiz 3 as I covered them in todays lecture.

[sandyh9711]

Do we have to memorize all the prefixes for alkane nomenclature, for instance, meth- for 1 carbon atom, prop- for 3 carbons, and all the way down to eicos- for 20 carbons?

[Akodjanian]

From Kinetics is the only part on the quiz going to be the Arrhenius equation? Or rate law and all that might be on it too?

[Chem_Mod]

Do we have to memorize all the prefixes for alkane nomenclature, for instance, meth- for 1 carbon atom, prop- for 3 carbons, and all the way down to eicos- for 20 carbons?

As commented in class, only the first 12.

[Chem_Mod]

From Kinetics is the only part on the quiz going to be the Arrhenius equation? Or rate law and all that might be on it too?

Quiz 3 covers from page 76 in the course reader to the end of page 99.

[Ryan Distaso 3C]

For Quiz 2, the formula sheet did not exactly match up with the one that comes with the course reader. The integrated rate laws were not explicitly labelled as being for first order, second order, and zero order and it seemed like we were somewhat expected to have them memorized. Will this be the case for Quiz 3 as well?

[Sophia Xu 3F]

when we are asked to "draw the structure" of some molecule, are we drawing the line structure or a structure that shows the atoms?

[Izzy Ick 4B]

Do we need to know the information from pages 79-81 in the course reader?

[Daniela Contreras 3E]

Are we going to need to know common names for substituents such as neo, text etc or just IUPAC names and prefixes?

[Chem_Mod]

For Quiz 2, the formula sheet did not exactly match up with the one that comes with the course reader. The integrated rate laws were not explicitly labelled as being for first order, second order, and zero order and it seemed like we were somewhat expected to have them memorized. Will this be the case for Quiz 3 as well?

Equations are given in all quiz and exams in my Chem 14A and 14B classes. But they are never labeled. Students need to be able to identify them, which we spent a week doing in class for the first order, second order, and zero order reactions.

[Chem_Mod]

when we are asked to "draw the structure" of some molecule, are we drawing the line structure or a structure that shows the atoms?

If the question explicitly states draw a line structure then it must be a line structure.
If a question asks to draw a Lewis structure then it must be a Lewis structure.
If a question ask to draw a structure then we will accept any valid structure.

[Chem_Mod]

Do we need to know the information from pages 79-81 in the course reader?

Yes. But not a big emphasis.

[Chem_Mod]

Are we going to need to know common names for substituents such as neo, text etc or just IUPAC names and prefixes?

Both are used in Chem 14C. My objective is to prepare you as best I can for Chem 14C. Therefore yes.

[Andrew Kolodziej 1C]

Is it acceptable just to use IUPAC, or will we lose points on the quiz/final if we do not use common names?

[Chem_Mod]

Is it acceptable just to use IUPAC, or will we lose points on the quiz/final if we do not use common names?

If the question does not specify give the IUPAC name then any correct name is fine.

[Daniela Contreras 3E]

For the quiz will we have to use the line diagrams when asked to draw a molecule or could we just use lewis structures?

[Daniela Contreras 3E]

On page 97 in the course reader why are one of the examples "ethyl methyl ether when I thought ether was a functional group which is not on the quiz

[Chem_Mod]

For the quiz will we have to use the line diagrams when asked to draw a molecule or could we just use lewis structures?

I already answered this question. See above.

[Chem_Mod]

On page 97 in the course reader why are one of the examples "ethyl methyl ether when I thought ether was a functional group which is not on the quiz

Functional groups are not covered in quiz 3, even though we did some common names (as you correctly point out).

[Chem_Mod]

Note: Quiz 3 Preparation Answers had two errors. They should be:

Q2. 3-ethyl-2,2,4-trimethyl-pentane

Q5. 1-bromo-3-iodocyclohexane

[204635822]

Some of the TAs/UAs say that halogens are put in alphabetical order while others say that halogens are named by mass. Which is correct?

[204635822]

Do we have to know the names of nucleophiles like Azide or thiosulfate, or do we just have to recognize that they are nucleophiles due to lone pair electrons?

[Chem_Mod]

Some of the TAs/UAs say that halogens are put in alphabetical order while others say that halogens are named by mass. Which is correct?

Halogens are always listed in alphabetical order when naming.

For geometric isomers, when determining cis/trans Z/E, one uses atomic number to determine priority for the atoms attached to each C atom in the double bond.
But this has nothing to do with naming and numbering of halogens.

[Chem_Mod]

Do we have to know the names of nucleophiles like Azide or thiosulfate, or do we just have to recognize that they are nucleophiles due to lone pair electrons?

Only recognize that they are nucleophiles due to available lone pair electrons.

[aissatou10]

Are functional groups going to be in quiz 3?

[Chem_Mod]

Are functional groups going to be in quiz 3?

No.

[Michelle Yu 1L]

functional group is not on the quiz

[204643191]

I got my quiz 3 back and for one of the questions, they asked us to:

Determine the systematic name for the following organic molecule:

and the structure was a cyclopentane with 2 methyls and a bromine attached. When naming it though, I got marked off when I called the structure a cyclopentane even though there were five carbons all connected in a circle and the structure had no double or triple bonds, it was had those 3 substituents connected to it. Would the substituents cause the name of the structure to change or am I right on this?

[204643191]

I got my quiz 3 back and for one of the questions, they asked us to:

Determine the systematic name for the following organic molecule:

and the structure was a cyclopentane with 2 methyls and a bromine attached. When naming it though, I got marked off when I called the structure a cyclopentane even though there were five carbons all connected in a circle and the structure had no double or triple bonds, it was had those 3 substituents connected to it. Would the substituents cause the name of the structure to change or am I right on this?

I meant tert-butyl, not propyl, so it looked like a t-shaped structure was connected to the cyclopentane, but I got marked wrong on the cyclopentane part. Can anyone explain why that would be wrong?