(a) Interpretation: The O atoms that are part of a glycoside in rebaudioside A are to be labeled. Concept introduction: The characteristic bond of glycoside is − O − . A hemiacetal converts into acetal when a monosaccharide is treated with alcohol and HCl . The acetal formed is known as glycoside.

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Answer 1

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Chapter 28, Problem 28.19P

Interpretation Introduction

(a)

Interpretation: The O atoms that are part of a glycoside in rebaudioside A are to be labeled.

Concept introduction: The characteristic bond of glycoside is −O−. A hemiacetal converts into acetal when a monosaccharide is treated with alcohol and HCl. The acetal formed is known as glycoside.

Interpretation Introduction

(b)

Interpretation: The aglycon and monosaccharides formed by the hydrolysis of rebaudioside A are to be predicted.

Concept introduction: The characteristic bond of glycoside is −O−. A hemiacetal converts into acetal when a monosaccharide is treated with alcohol and HCl. The acetal formed is known as glycoside.

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f. Predict how the van Deemter curve in Figure 7 would change if the temperature were raised from 40 °C to 55 °C. Figure 7. van Desmter curves in reduced coordinates for four nitroalkane homologues (nitropropane, black; nitrobutane, red; nitropentane, blue; and nitrohexane, green) separated on the FMS phase. Chromatographic conditions: column dimensions 50 mm × 4.6 mm id, eluent 30/70 ACN/water, flow rates 0.2-5.0 mL/min, injection volume 0.5 and column temperature 40 °C. No corrections to the plate heights have been made to account for extracolumn dispersion. Reduced Plate Height (h) ° 20 40 60 Reduced Velocity (v) 8. (2) A water sample is analyzed for traces of benzene using headspace analysis. The sample and standard are spiked with a fixed amount of toluene as an internal standard. The following data are obtained: Ppb benzene Peak area benzene Peak area toluene 10.0 252 376 Sample 533 368 What is the concentration of benzene in the sample?

Answer 2

Question

Chapter 28, Problem 28.19P

Interpretation Introduction

(a)

Interpretation: The O atoms that are part of a glycoside in rebaudioside A are to be labeled.

Concept introduction: The characteristic bond of glycoside is −O−. A hemiacetal converts into acetal when a monosaccharide is treated with alcohol and HCl. The acetal formed is known as glycoside.

Interpretation Introduction

(b)

Interpretation: The aglycon and monosaccharides formed by the hydrolysis of rebaudioside A are to be predicted.

Concept introduction: The characteristic bond of glycoside is −O−. A hemiacetal converts into acetal when a monosaccharide is treated with alcohol and HCl. The acetal formed is known as glycoside.

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Answer 3

Question

Chapter 28, Problem 28.19P

Interpretation Introduction

(a)

Interpretation: The O atoms that are part of a glycoside in rebaudioside A are to be labeled.

Concept introduction: The characteristic bond of glycoside is −O−. A hemiacetal converts into acetal when a monosaccharide is treated with alcohol and HCl. The acetal formed is known as glycoside.

Interpretation Introduction

(b)

Interpretation: The aglycon and monosaccharides formed by the hydrolysis of rebaudioside A are to be predicted.

Concept introduction: The characteristic bond of glycoside is −O−. A hemiacetal converts into acetal when a monosaccharide is treated with alcohol and HCl. The acetal formed is known as glycoside.

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Answer 4

Question

Chapter 28, Problem 28.19P

Interpretation Introduction

(a)

Interpretation: The O atoms that are part of a glycoside in rebaudioside A are to be labeled.

Concept introduction: The characteristic bond of glycoside is −O−. A hemiacetal converts into acetal when a monosaccharide is treated with alcohol and HCl. The acetal formed is known as glycoside.

Interpretation Introduction

(b)

Interpretation: The aglycon and monosaccharides formed by the hydrolysis of rebaudioside A are to be predicted.

Concept introduction: The characteristic bond of glycoside is −O−. A hemiacetal converts into acetal when a monosaccharide is treated with alcohol and HCl. The acetal formed is known as glycoside.

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Answer 5

Chapter 28, Problem 28.19P

Interpretation Introduction

(a)

Interpretation: The O atoms that are part of a glycoside in rebaudioside A are to be labeled.

Concept introduction: The characteristic bond of glycoside is −O−. A hemiacetal converts into acetal when a monosaccharide is treated with alcohol and HCl. The acetal formed is known as glycoside.

Interpretation Introduction

(b)

Interpretation: The aglycon and monosaccharides formed by the hydrolysis of rebaudioside A are to be predicted.

Concept introduction: The characteristic bond of glycoside is −O−. A hemiacetal converts into acetal when a monosaccharide is treated with alcohol and HCl. The acetal formed is known as glycoside.

Answer 6

Chapter 28, Problem 28.19P

Interpretation Introduction

(a)

Interpretation: The O atoms that are part of a glycoside in rebaudioside A are to be labeled.

Concept introduction: The characteristic bond of glycoside is −O−. A hemiacetal converts into acetal when a monosaccharide is treated with alcohol and HCl. The acetal formed is known as glycoside.

Answer 7

Chapter 28, Problem 28.19P

Interpretation Introduction

(a)

Interpretation: The O atoms that are part of a glycoside in rebaudioside A are to be labeled.

Concept introduction: The characteristic bond of glycoside is −O−. A hemiacetal converts into acetal when a monosaccharide is treated with alcohol and HCl. The acetal formed is known as glycoside.

Answer 8

Interpretation Introduction

(b)

Interpretation: The aglycon and monosaccharides formed by the hydrolysis of rebaudioside A are to be predicted.

Concept introduction: The characteristic bond of glycoside is −O−. A hemiacetal converts into acetal when a monosaccharide is treated with alcohol and HCl. The acetal formed is known as glycoside.

Answer 9

Interpretation Introduction

(b)

Interpretation: The aglycon and monosaccharides formed by the hydrolysis of rebaudioside A are to be predicted.

Concept introduction: The characteristic bond of glycoside is −O−. A hemiacetal converts into acetal when a monosaccharide is treated with alcohol and HCl. The acetal formed is known as glycoside.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 28 - Prob. 28.1P Ch. 28 - Prob. 28.2P Ch. 28 - Label each stereogenic center as R or S. a. b. c....Ch. 28 - Convert the ball-and-stick model to a Fischer...Ch. 28 - Prob. 28.5P Ch. 28 - Prob. 28.6P Ch. 28 - Prob. 28.7P Ch. 28 - Prob. 28.8P Ch. 28 - Prob. 28.9P Ch. 28 - Prob. 28.10P

Solution Summary: The author explains that the O atoms that are part of a glycoside in rebaudioside A are labeled in red color.

Concept explainers

(a)

Interpretation: The O atoms that are part of a glycoside in rebaudioside A are to be labeled.

Concept introduction: The characteristic bond of glycoside is −O−. A hemiacetal converts into acetal when a monosaccharide is treated with alcohol and HCl. The acetal formed is known as glycoside.

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Chapter 28 Solutions

Solution Summary: The author explains that the O atoms that are part of a glycoside in rebaudioside A are labeled in red color.

Concept explainers

(a) Interpretation: The O atoms that are part of a glycoside in rebaudioside A are to be labeled. Concept introduction: The characteristic bond of glycoside is −O−. A hemiacetal converts into acetal when a monosaccharide is treated with alcohol and HCl. The acetal formed is known as glycoside.

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Chapter 28 Solutions