Chemistry for Changing Times
Chemistry for Changing Times
14th Edition
ISBN: 9780134212777
Author: John W. Hill; Terry W. McCreary
Publisher: Pearson Education (US)
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Chapter 17, Problem 43P

(a)

Interpretation Introduction

Interpretation: To identify the purpose of BHA food additive.

Concept introduction: Food additives are the substances which are added to the food to preserve their flavor or increase its appearance, taste, or other qualities. Some of the additives have been used since long time; for instance, preserving the food with vinegar, preserving sweets or by using sulfur dioxide as with wines. With the beginning of processed foods in the twentieth century, many food additives have been introduced in our daily life, which are of both natural and synthetic origin. Sweeteners are added to foods for flavoring. Sweeteners are used to keep the calories of the food low, or in case of ailment like tooth decay, diabetes mellitus, or diarrhea.

(b)

Interpretation Introduction

Interpretation: To identify the purpose of FD&C Blue #2 food additive.

Concept introduction: Food additives are the substances which are added to the food to preserve their flavor or increase its appearance, taste, or other qualities. Some of the additives have been used since long time; for instance, preserving the food with vinegar, preserving sweets or by using sulfur dioxide as with wines. With the beginning of processed foods in the twentieth century, many food additives have been introduced in our daily life, which are of both natural and synthetic origin. Sweeteners are added to foods for flavoring. Sweeteners are used to keep the calories of the food low, or in case of ailment like tooth decay, diabetes mellitus, or diarrhea.

(c)

Interpretation Introduction

Interpretation: To identify the purpose of saccharin food additive.

Concept introduction: Food additives are the substances which are added to the food to preserve their flavor or increase its appearance, taste, or other qualities. Some of the additives have been used since long time; for instance, preserving the food with vinegar, preserving sweets or by using sulfur dioxide as with wines. With the beginning of processed foods in the twentieth century, many food additives have been introduced in our daily life, which are of both natural and synthetic origin. Sweeteners are added to foods for flavoring. Sweeteners are used to keep the calories of the food low, or in case of ailment like tooth decay, diabetes mellitus, or diarrhea.

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6. Consider the following exothermic reaction below. 2Cu2+(aq) +41 (aq)2Cul(s) + 12(aq) a. If Cul is added, there will be a shift left/shift right/no shift (circle one). b. If Cu2+ is added, there will be a shift left/shift right/no shift (circle one). c. If a solution of AgNO3 is added, there will be a shift left/shift right/no shift (circle one). d. If the solvent hexane (C6H14) is added, there will be a shift left/shift right/no shift (circle one). Hint: one of the reaction species is more soluble in hexane than in water. e. If the reaction is cooled, there will be a shift left/shift right/no shift (circle one). f. Which of the changes above will change the equilibrium constant, K?
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Chapter 17 Solutions

Chemistry for Changing Times

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