The relationship between the effect of the number of carbon-carbon double bond in fatty acids and their melting points should be explained. Concept Introduction: Fatty acids are aliphatic mono- carboxylic acids that are mostly obtained from the hydrolysis of natural fats and oils. General formula R − ( C H 2 ) n − C O O H and mostly have straight chain (a few exceptions have branched and heterocyclic chains). In this formula “ n ” is mostly an even number of carbon atoms like ( 2 − 3 4 ) with few exceptions that have an odd number. Saturated fatty acid: They have no double bonds in between the long hydrocarbon chain, so they are straight and can be packed together. Example: Myristate, Palmitate, Laurate, etc., Unsaturated fatty acid: They have at least one double bond in between the long hydrocarbon chain. These double bonds cause the fatty acid chain to “kink” which results in more fluidity.

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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 17, Problem 17.26QP

Interpretation Introduction

Interpretation:

The relationship between the effect of the number of carbon-carbon double bond in fatty acids and their melting points should be explained.

Concept Introduction:

Fatty acids are aliphatic mono-carboxylic acids that are mostly obtained from the hydrolysis of natural fats and oils.

General formula R−(CH2)n−COOH and mostly have straight chain (a few exceptions have branched and heterocyclic chains). In this formula “n” is mostly an even number of carbon atoms like (2−34) with few exceptions that have an odd number.

Saturated fatty acid: They have no double bonds in between the long hydrocarbon chain, so they are straight and can be packed together.

Example: Myristate, Palmitate, Laurate, etc.,

Unsaturated fatty acid: They have at least one double bond in between the long hydrocarbon chain.

These double bonds cause the fatty acid chain to “kink” which results in more fluidity.

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19.78 Write the products of the following sequences of reactions. Refer to your reaction road- maps to see how the combined reactions allow you to "navigate" between the different functional groups. Note that you will need your old Chapters 6-11 and Chapters 15-18 roadmaps along with your new Chapter 19 roadmap for these. (a) 1. BHS 2. H₂O₂ 3. H₂CrO4 4. SOCI₂ (b) 1. Cl₂/hv 2. KOLBU 3. H₂O, catalytic H₂SO4 4. H₂CrO4 Reaction Roadmap An alkene 5. EtOH 6.0.5 Equiv. NaOEt/EtOH 7. Mild H₂O An alkane 1.0 2. (CH3)₂S 3. H₂CrO (d) (c) 4. Excess EtOH, catalytic H₂SO OH 4. Mild H₂O* 5.0.5 Equiv. NaOEt/EtOH An alkene 6. Mild H₂O* A carboxylic acid 7. Mild H₂O* 1. SOC₁₂ 2. EtOH 3.0.5 Equiv. NaOEt/E:OH 5.1.0 Equiv. NaOEt 6. NH₂ (e) 1. 0.5 Equiv. NaOEt/EtOH 2. Mild H₂O* Br (f) i H An aldehyde 1. Catalytic NaOE/EtOH 2. H₂O*, heat 3. (CH,CH₂)₂Culi 4. Mild H₂O* 5.1.0 Equiv. LDA Br An ester 4. NaOH, H₂O 5. Mild H₂O* 6. Heat 7. MgBr 8. Mild H₂O* 7. Mild H₂O+

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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 17, Problem 17.26QP

Interpretation Introduction

Interpretation:

The relationship between the effect of the number of carbon-carbon double bond in fatty acids and their melting points should be explained.

Concept Introduction:

Fatty acids are aliphatic mono-carboxylic acids that are mostly obtained from the hydrolysis of natural fats and oils.

General formula R−(CH2)n−COOH and mostly have straight chain (a few exceptions have branched and heterocyclic chains). In this formula “n” is mostly an even number of carbon atoms like (2−34) with few exceptions that have an odd number.

Saturated fatty acid: They have no double bonds in between the long hydrocarbon chain, so they are straight and can be packed together.

Example: Myristate, Palmitate, Laurate, etc.,

Unsaturated fatty acid: They have at least one double bond in between the long hydrocarbon chain.

These double bonds cause the fatty acid chain to “kink” which results in more fluidity.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

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 17, Problem 17.26QP

Interpretation Introduction

Interpretation:

The relationship between the effect of the number of carbon-carbon double bond in fatty acids and their melting points should be explained.

Concept Introduction:

Fatty acids are aliphatic mono-carboxylic acids that are mostly obtained from the hydrolysis of natural fats and oils.

General formula R−(CH2)n−COOH and mostly have straight chain (a few exceptions have branched and heterocyclic chains). In this formula “n” is mostly an even number of carbon atoms like (2−34) with few exceptions that have an odd number.

Saturated fatty acid: They have no double bonds in between the long hydrocarbon chain, so they are straight and can be packed together.

Example: Myristate, Palmitate, Laurate, etc.,

Unsaturated fatty acid: They have at least one double bond in between the long hydrocarbon chain.

These double bonds cause the fatty acid chain to “kink” which results in more fluidity.

Expert Solution & Answer

Want to see the full answer?

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 17, Problem 17.26QP

Interpretation Introduction