The possible explanation for the lower melting point of isolated caffeine than the literature value needs to be given. Concept Introduction: In the isolation of caffeine from tea leaves, the main problem is that the caffeine is not the only natural substance present in the tea leaves, but there are other substances as well from which it needs to be separated. The main component is cellulose which is polymer of glucose and it is insoluble in water. Due to the insolubility in water it causes no problem in the isolation method. Caffeine is water soluble; it is present as 5% by weight of the tea leaves.

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Answer 1

Question

Chapter 11, Problem 4Q

Interpretation Introduction

Interpretation:

The possible explanation for the lower melting point of isolated caffeine than the literature value needs to be given.

Concept Introduction:

In the isolation of caffeine from tea leaves, the main problem is that the caffeine is not the only natural substance present in the tea leaves, but there are other substances as well from which it needs to be separated. The main component is cellulose which is polymer of glucose and it is insoluble in water. Due to the insolubility in water it causes no problem in the isolation method. Caffeine is water soluble; it is present as 5% by weight of the tea leaves.

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Answer 2

Question

Chapter 11, Problem 4Q

Interpretation Introduction

Interpretation:

The possible explanation for the lower melting point of isolated caffeine than the literature value needs to be given.

Concept Introduction:

In the isolation of caffeine from tea leaves, the main problem is that the caffeine is not the only natural substance present in the tea leaves, but there are other substances as well from which it needs to be separated. The main component is cellulose which is polymer of glucose and it is insoluble in water. Due to the insolubility in water it causes no problem in the isolation method. Caffeine is water soluble; it is present as 5% by weight of the tea leaves.

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Answer 3

Question

Chapter 11, Problem 4Q

Interpretation Introduction

Interpretation:

The possible explanation for the lower melting point of isolated caffeine than the literature value needs to be given.

Concept Introduction:

In the isolation of caffeine from tea leaves, the main problem is that the caffeine is not the only natural substance present in the tea leaves, but there are other substances as well from which it needs to be separated. The main component is cellulose which is polymer of glucose and it is insoluble in water. Due to the insolubility in water it causes no problem in the isolation method. Caffeine is water soluble; it is present as 5% by weight of the tea leaves.

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Answer 4

Question

Chapter 11, Problem 4Q

Interpretation Introduction

Interpretation:

The possible explanation for the lower melting point of isolated caffeine than the literature value needs to be given.

Concept Introduction:

In the isolation of caffeine from tea leaves, the main problem is that the caffeine is not the only natural substance present in the tea leaves, but there are other substances as well from which it needs to be separated. The main component is cellulose which is polymer of glucose and it is insoluble in water. Due to the insolubility in water it causes no problem in the isolation method. Caffeine is water soluble; it is present as 5% by weight of the tea leaves.

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Answer 5

Chapter 11, Problem 4Q

Interpretation Introduction

Interpretation:

The possible explanation for the lower melting point of isolated caffeine than the literature value needs to be given.

Concept Introduction:

In the isolation of caffeine from tea leaves, the main problem is that the caffeine is not the only natural substance present in the tea leaves, but there are other substances as well from which it needs to be separated. The main component is cellulose which is polymer of glucose and it is insoluble in water. Due to the insolubility in water it causes no problem in the isolation method. Caffeine is water soluble; it is present as 5% by weight of the tea leaves.

Answer 6

Chapter 11, Problem 4Q

Interpretation Introduction

Interpretation:

The possible explanation for the lower melting point of isolated caffeine than the literature value needs to be given.

Concept Introduction:

In the isolation of caffeine from tea leaves, the main problem is that the caffeine is not the only natural substance present in the tea leaves, but there are other substances as well from which it needs to be separated. The main component is cellulose which is polymer of glucose and it is insoluble in water. Due to the insolubility in water it causes no problem in the isolation method. Caffeine is water soluble; it is present as 5% by weight of the tea leaves.

Answer 7

Chapter 11, Problem 4Q

Interpretation Introduction

Interpretation:

The possible explanation for the lower melting point of isolated caffeine than the literature value needs to be given.

Concept Introduction:

In the isolation of caffeine from tea leaves, the main problem is that the caffeine is not the only natural substance present in the tea leaves, but there are other substances as well from which it needs to be separated. The main component is cellulose which is polymer of glucose and it is insoluble in water. Due to the insolubility in water it causes no problem in the isolation method. Caffeine is water soluble; it is present as 5% by weight of the tea leaves.

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 11 - Prob. 1Q Ch. 11 - Prob. 2Q Ch. 11 - Prob. 3Q Ch. 11 - Prob. 4Q Ch. 11 - Prob. 5Q

Solution Summary: The author explains that caffeine is not the only natural substance present in tea leaves, but there are other substances from which it needs to be separated. Caffeine is water soluble; it is present as 5% by weight of the tea

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Chapter 11 Solutions