Stereocenter - Study guides, Class notes & Summaries

electrophiles - electron seeking reagents that have room to accept a electron pair nucleophiles - reagents seeking a nucleus to which to donate a pair of electrons proton transfer or protonation reaction - the transfer of a proton from one base to another transition state - lying between the products and reactants free energy of activation (delta G double dagger) - the height of the barrier, the energy that the reactants attain in reaching the the transition state e...

Our left and right hands are not identical to each other, rather, they are... - correct answer mirror images. Handedness is important in organic and biological chemistry, where it arises primarily as a consequence of the tetrahedral stereochemistry of... - correct answer sp3-hybridized carbon atoms. (5.1 Enantiomers and the Tetrahedral Carbon) - correct answer Molecules that a...

What is the general formula for a carbohydrate? - Correct Answer Cx(H2O)y How do you determine the number of stereoisomers for a given carbohydrate? - Correct Answer 2^n where n= number of stereocenters Distinguish between the D and L designations for carbohydrates. - Correct Answer In the L form the hydroxy group is on the bottom left closest to the CH2OH group in the frame of a Fischer projection In the D form the OH is on the bottom right What are anomers? - Correct Answer Diast...

1 MODULE 8 PORTAGE 219 ORGANIC CHEMISTRY EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ large molecule made by repetitive linking of smaller units (monomers) Correct Answer: Polymer very large molecule composed of thousands of covalently bonded atoms (ex: polymer) Correct Answer: Macromolecule two ways polymers are made Correct Answer: 1. natural (in nature) 2. synthetic (in lab) natural polymers Correct Answer: rubber, carbs: starch & cellulose, proteins, nu...

Organic Chemistry ACS Final Exam Study Guide Basicity rules - Answer--strong base: unstable/reactive (ED groups) -weak base: stable (EW groups/more EN/bigger) Chair conformation - Answer--more stable equitorial (slanted) -pointing up/pointing down=cis if both up -elimination: trans and diaxial Newman projection - Answer--gauche: substituent groups adjacent to eachother -grab middle and turn to put in plane Enantiomers - Answer--not superimposable mirror images -same besides stereochemi...

Organic Chemistry ACS Final Exam Questions and Answers 100% Solved Basicity rules - -strong base: unstable/reactive (ED groups) -weak base: stable (EW groups/more EN/bigger) Chair conformation - -more stable equitorial (slanted) -pointing up/pointing down=cis if both up -elimination: trans and diaxial Newman projection - -gauche: substituent groups adjacent to eachother -grab middle and turn to put in plane Enantiomers - -not superimposable mirror images -same besides stereochemistry ...

CHEM 14C Winter 12 Final Exam Part B Solutions 1. HO O O 2. Influence #1: Resonance causes some or the entire molecule to be planar. Influence #2: Resonance increases stability. Influence #3: Resonance causes electron delocalization. 3. Coplanar The carboxylic acid and ring B have this geometry because it allows for conjugation between the C=O and the B ring aromatic electron cloud. H 4. 5. Ten 6. A, B, and C 7. Of the carbon stereocent...

CHEM 14C Winter 12 Final Exam Part B Solutions 1. HO O O 2. Influence #1: Resonance causes some or the entire molecule to be planar. Influence #2: Resonance increases stability. Influence #3: Resonance causes electron delocalization. 3. Coplanar The carboxylic acid and ring B have this geometry because it allows for conjugation between the C=O and the B ring aromatic electron cloud. H 4. 5. Ten 6. A, B, and C 7. Of the carbon stereocent...

CHEM 1315 Practice Exam Question Set 1 1. (3 points each) Draw the Lewis structure of the following species with proper assignment of formal charge(s). If any of them have resonance structure(s), give all the possible reasonable structures. (a) HNO3 (b) [B(OH)4]– (c) N – (d) O3 2. (6 points each) Most of these are more difficult than you will find on the exam. But if you can answer them, you’re in good shape for these topics. Draw the indicated orbital and answer the que...

isomers - ANSWER-molecule that have the same molecule formula constitutional isomers - ANSWER-same formula, different connectivity of atoms stereoisomers - ANSWER-same formula, same connectivity, DIFFERENT spatial arrangement conformer - ANSWER-rotation of a group around a sigma bond (also known as stereoisomers) enantiomers - ANSWER-isomers that have the same connectivity molecules that are mirror images of each other, but are not super imposable diastereomers - ANSWER-isomers...