The structures of two five-membered-ring lactones are to be drawn. Concept Introduction: The aldaric acid of D-glucose forms two five membered-ring lactones. Aldaric acid, also known as saccharic acid is a poly hydroxy dicarboxylic acid that is formally produced by the oxidation of aldose at both terminals. Aldaric acids are synthesized by the process of oxidation of aldose with nitric acid. These are also called sugar acids. In these acids terminal hydroxyl and carbonyl groups of the sugars have been replaced by terminal carboxylic acids and are characterized by the formula COOH − ( CHOH ) n − COOH . Here, n is the number of carbon units present in the chain other than terminal carbons. Lactones are cyclic compounds. These are formed by intramolecular esterification of the corresponding Saccharide units.

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Answer 1

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Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 20, Problem 59P

Interpretation Introduction

Interpretation:

The structures of two five-membered-ring lactones are to be drawn.

Concept Introduction:

The aldaric acid of D-glucose forms two five membered-ring lactones.

Aldaric acid, also known as saccharic acid is a poly hydroxy dicarboxylic acid that is formally produced by the oxidation of aldose at both terminals. Aldaric acids are synthesized by the process of oxidation of aldose with nitric acid. These are also called sugar acids.

In these acids terminal hydroxyl and carbonyl groups of the sugars have been replaced by terminal carboxylic acids and are characterized by the formula COOH−(CHOH)n−COOH. Here, n is the number of carbon units present in the chain other than terminal carbons.

Lactones are cyclic compounds. These are formed by intramolecular esterification of the corresponding Saccharide units.

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The following equations represent the formation of compound MX. What is the AH for the electron affinity of X (g)? X₂ (g) → 2X (g) M (s) → M (g) M (g) M (g) + e- AH = 60 kJ/mol AH = 22 kJ/mol X (g) + e-X (g) M* (g) +X (g) → MX (s) AH = 118 kJ/mol AH = ? AH = -190 kJ/mol AH = -100 kJ/mol a) -80 kJ b) -30 kJ c) -20 kJ d) 20 kJ e) 156 kJ

Answer 2

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Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 20, Problem 59P

Interpretation Introduction

Interpretation:

The structures of two five-membered-ring lactones are to be drawn.

Concept Introduction:

The aldaric acid of D-glucose forms two five membered-ring lactones.

Aldaric acid, also known as saccharic acid is a poly hydroxy dicarboxylic acid that is formally produced by the oxidation of aldose at both terminals. Aldaric acids are synthesized by the process of oxidation of aldose with nitric acid. These are also called sugar acids.

In these acids terminal hydroxyl and carbonyl groups of the sugars have been replaced by terminal carboxylic acids and are characterized by the formula COOH−(CHOH)n−COOH. Here, n is the number of carbon units present in the chain other than terminal carbons.

Lactones are cyclic compounds. These are formed by intramolecular esterification of the corresponding Saccharide units.

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Answer 3

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 20, Problem 59P

Interpretation Introduction

Interpretation:

The structures of two five-membered-ring lactones are to be drawn.

Concept Introduction:

The aldaric acid of D-glucose forms two five membered-ring lactones.

Aldaric acid, also known as saccharic acid is a poly hydroxy dicarboxylic acid that is formally produced by the oxidation of aldose at both terminals. Aldaric acids are synthesized by the process of oxidation of aldose with nitric acid. These are also called sugar acids.

In these acids terminal hydroxyl and carbonyl groups of the sugars have been replaced by terminal carboxylic acids and are characterized by the formula COOH−(CHOH)n−COOH. Here, n is the number of carbon units present in the chain other than terminal carbons.

Lactones are cyclic compounds. These are formed by intramolecular esterification of the corresponding Saccharide units.

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Check out a sample textbook solution

See solution

Answer 4

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 20, Problem 59P

Interpretation Introduction