After a series of Kiliani-Fischer syntheses on D-glyceraldehyde,an unknown sugar was isolated from the reaction mixture.The following experimental data was obtained.What is the structure of this unknown sugar? Data: - Molecular formula: C6H12O6 - Reacts with phenylhydrazine to give an osazone,mp 178°C. - Reacts with HNO3 to give an optically active aldaric acid. - Wohl degradation followed by HNO3 oxidation gives an optically inactive Aldaric acid. - Two Wohl degradations followed by HNO3 oxidation give a meso-tartaric acid.

A) A B) B C) C D) D A) A B) B C) C D) D

Exam 26: Carbohydrates

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Oxidation of a D-hexose with nitric acid forms an optically active aldaric acid.A Wohl degradation of the same D-hexose followed by oxidation with nitric acid forms an optically active aldaric acid.What are the three possible D-hexoses that fit this data?

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Which of the following sugars can be classified as a ketohexose?

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What is the Fischer projection of the monosaccharide from which the following glycoside was prepared?

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How many carbons does a pentose sugar have?

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Question 4

What is the composition of lactose?

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Question 5

How many possible stereoisomers are there of the following heptose?

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Question 6

Which of the following is D-galactose?

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Question 7

What is the classification of pyranose forms of monosaccharides?

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Question 8

Cellulose is a polysaccharide with ________ linkages.

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Question 9

Which of the following is D-glucose?

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Question 10

After a series of Kiliani-Fischer syntheses on D-glyceraldehyde,an unknown sugar was isolated from the reaction mixture.The following experimental data was obtained.What is the structure of this unknown sugar? Data: - Molecular formula: C₆H₁₂O₆ - Reacts with phenylhydrazine to give an osazone,mp 178°C. - Reacts with HNO₃ to give an optically active aldaric acid. - Wohl degradation followed by HNO₃ oxidation gives an optically inactive Aldaric acid. - Two Wohl degradations followed by HNO₃ oxidation give a meso-tartaric acid.

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Question 11

Which is the correct Haworth projection for the aanomer of allose?

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Question 12

Which of the following is a polysaccharide?

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Question 13

Which of the following reagents would convert glucose into ethyl glucopyranoside?

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Question 14

Which of the following is a disaccharide?

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Question 15

Is the following carbohydrate D or L? Provide an explanation for your answer.

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Question 16

Which of the following sugars can be classified as a ketotetrose?

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Question 17

Which of the following is D-fructose?

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Question 18

Which of the following sugars can be classified as an aldohexose?

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Question 19

Upon hydrolysis of amylopectin,what sugar is formed?

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Question 20

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Exam 26: Carbohydrates

Oxidation of a D-hexose with nitric acid forms an optically active aldaric acid.A Wohl degradation of the same D-hexose followed by oxidation with nitric acid forms an optically active aldaric acid.What are the three possible D-hexoses that fit this data?

Which of the following sugars can be classified as a ketohexose?

What is the Fischer projection of the monosaccharide from which the following glycoside was prepared?

How many carbons does a pentose sugar have?

What is the composition of lactose?

How many possible stereoisomers are there of the following heptose?

Which of the following is D-galactose?

What is the classification of pyranose forms of monosaccharides?

Cellulose is a polysaccharide with ________ linkages.

Which of the following is D-glucose?

Which is the correct Haworth projection for the aanomer of allose?

Which of the following is a polysaccharide?

Which of the following reagents would convert glucose into ethyl glucopyranoside?

Which of the following is a disaccharide?

Is the following carbohydrate D or L? Provide an explanation for your answer.

Which of the following sugars can be classified as a ketotetrose?

Which of the following is D-fructose?

Which of the following sugars can be classified as an aldohexose?

Upon hydrolysis of amylopectin,what sugar is formed?

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Introduction to Organic Molecules and Functional Groups

Alkanes

Stereochemistry

Understanding Organic Reactions

Alkyl Halides and Nucleophilic Substitution

Alkyl Halides and Elimination Reactions

Alcohols,ethers,and Related Compounds

Alkenes and Addition Reactions

Alkynes and Synthesis

Oxidation and Reduction

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Conjugation, resonance, and Dienes

Benzene and Aromatic Compounds

Reactions of Aromatic Compounds

Introduction to Carbonyl Chemistry; Organometallic Reagents; Oxidation and Reduction

Aldehydes and Ketones - Nucleophilic Addition

Carboxylic Acids and the Acidity of the O-H Bond

Carboxylic Acids and Their Derivatives - Nucleophilic Acyl Substitution

Substitution Reactions of Carbonyl Compounds at the a Carbon

Carbonyl Condensation Reactions

Amines

Carbon-Carbon Bond-Forming Reactions in Organic Synthesis

Pericyclic Reactions

Amino Acids and Proteins

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Molecular Ion Peaks and Fragmentation Patterns

Analyzing Molecular Motion and Infrared Spectroscopy

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