CHM 1240 Lecture Notes - Lecture 13: Gibbs Free Energy, Endergonic Reaction

Question 6 [1.5 pts] What is the composition (as % beta anomer) of the equilibrium depicted in Figure #1 given that its specific rotation is +328°? Figure #1 Sugar F alpha anomer Sugar F beta anomer Sugar F Open-chain form specific rotation is +200 specific rotation is +400° Question 7 [1.5 pts] This is a matching question. You will be asked to provide the appropriate attributes - alpha or beta, first number, second number - for the glycosidic linkage in compound G HOIl O HO HO OH HO OH Compound G Question 8 [1.5 pts] How many unique stereoisomeric forms of compound H are there (assuming that every stereoisomeric form of compound H is acyclic)? H H OH OH HH H OH OH H OH OH OH O Compound H Question 9 [1.5 pts] What are the organic product(s) of Reaction #2? You will be provided with a list from which you will select your answer(s) Reaction #2 HO HO excess water, acid OH HO OH HO

Question 6 [1.5 pts] What is the composition (as % beta anomer) of the equilibrium depicted in Figure #1 given that its specific rotation is +328°? Figure #1 Sugar F Sugar F alpha anomer Sugar F beta anomer Open-chain form specific rotation is +200 specific rotation is +400° Question 7 [1.5 pts] This is a matching question. You will be asked to provide the appropriate attributes - alpha or beta, first number, second number for the glycosidic linkage in compound G HOIl O HO HO OH HO OH Compound G Question 8 [1.5 pts] How many unique stereoisomeric forms of compound H are there (assuming that every stereoisomeric form of compound H is acyclic)? H H OH OHH H OH OH H H OH OH OH O Compound H Question 9 [1.5 pts] What are the organic product(s) of Reaction #2? You will be provided with a list from which you will select your answer(s) Reaction #2 HO HO excess water, acid OH HO OH HO

QUESTION 1 QUESTION 2 Which of the following chiral carbons does not have an absolutely configuration of "S"? What is the relationship between these two molecules? H2OH NH2 CH2OH H HO OH OH CH2CH3 No relationship Same molecule Constitutional isomers O D Diasteromers Enantiomers QUESTION 3 QUESTION 4 What is the relationship between these two molecules? CH3 The absolute configuration for carbons marked with the letters A and B will be CH3 Br Constitutional isomers No relationship Diasteromers O A: R: B: S O A: R: B: R Enantiomers Same molecule O A S, B: F QUESTION 5 The specific rotation of (S)-2-butanol is +13.5. If 1.00 g of its enantiomer is dissolved in 10 ml of water and the sample is placed in a polarimeter with a length of 1 dm. What would be the rotation you will see? Cannot be determined +1.35 13.5 1.35 +13.5