(a) Interpretation: The two carbocation intermediates that can be produced by the addition of a proton to the given allene are to be drawn. Concept introduction: Allenes are compounds with cumulated double bonds. Because of this, they are electron-rich and undergo electrophilic addition with Brønsted acids. In the first step, the proton adds generally to one carbon of the double bond forming a carbocation intermediate with the positive charge on the other carbon of the initial double bond.

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Answer 1

Question

Chapter 14, Problem 14.65P

Interpretation Introduction

(a)

Interpretation:

The two carbocation intermediates that can be produced by the addition of a proton to the given allene are to be drawn.

Concept introduction:

Allenes are compounds with cumulated double bonds. Because of this, they are electron-rich and undergo electrophilic addition with Brønsted acids. In the first step, the proton adds generally to one carbon of the double bond forming a carbocation intermediate with the positive charge on the other carbon of the initial double bond.

Interpretation Introduction

(b)

Interpretation:

The relative stabilities of the two carbocation intermediates formed by allene are to be explained.

Concept introduction:

The stability of a carbocation depends primarily on two factors, the number of alkyl groups attached to the carbon and resonance. Resonance stabilization is generally more than the stabilization because of the inductive electron-donating nature of alkyl groups. However, resonance requires the p orbitals of adjacent carbon (or other atoms) to be parallel to the empty p orbital of the carbocation.

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Answer 2

Question

Chapter 14, Problem 14.65P

Interpretation Introduction

(a)

Interpretation:

The two carbocation intermediates that can be produced by the addition of a proton to the given allene are to be drawn.

Concept introduction:

Allenes are compounds with cumulated double bonds. Because of this, they are electron-rich and undergo electrophilic addition with Brønsted acids. In the first step, the proton adds generally to one carbon of the double bond forming a carbocation intermediate with the positive charge on the other carbon of the initial double bond.

Interpretation Introduction

(b)

Interpretation:

The relative stabilities of the two carbocation intermediates formed by allene are to be explained.

Concept introduction:

The stability of a carbocation depends primarily on two factors, the number of alkyl groups attached to the carbon and resonance. Resonance stabilization is generally more than the stabilization because of the inductive electron-donating nature of alkyl groups. However, resonance requires the p orbitals of adjacent carbon (or other atoms) to be parallel to the empty p orbital of the carbocation.

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Answer 3

Question

Chapter 14, Problem 14.65P

Interpretation Introduction

(a)

Interpretation:

The two carbocation intermediates that can be produced by the addition of a proton to the given allene are to be drawn.

Concept introduction:

Allenes are compounds with cumulated double bonds. Because of this, they are electron-rich and undergo electrophilic addition with Brønsted acids. In the first step, the proton adds generally to one carbon of the double bond forming a carbocation intermediate with the positive charge on the other carbon of the initial double bond.

Interpretation Introduction

(b)

Interpretation:

The relative stabilities of the two carbocation intermediates formed by allene are to be explained.

Concept introduction:

The stability of a carbocation depends primarily on two factors, the number of alkyl groups attached to the carbon and resonance. Resonance stabilization is generally more than the stabilization because of the inductive electron-donating nature of alkyl groups. However, resonance requires the p orbitals of adjacent carbon (or other atoms) to be parallel to the empty p orbital of the carbocation.

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Answer 4

Question

Chapter 14, Problem 14.65P

Interpretation Introduction

(a)

Interpretation:

The two carbocation intermediates that can be produced by the addition of a proton to the given allene are to be drawn.

Concept introduction:

Allenes are compounds with cumulated double bonds. Because of this, they are electron-rich and undergo electrophilic addition with Brønsted acids. In the first step, the proton adds generally to one carbon of the double bond forming a carbocation intermediate with the positive charge on the other carbon of the initial double bond.

Interpretation Introduction

(b)

Interpretation:

The relative stabilities of the two carbocation intermediates formed by allene are to be explained.

Concept introduction:

The stability of a carbocation depends primarily on two factors, the number of alkyl groups attached to the carbon and resonance. Resonance stabilization is generally more than the stabilization because of the inductive electron-donating nature of alkyl groups. However, resonance requires the p orbitals of adjacent carbon (or other atoms) to be parallel to the empty p orbital of the carbocation.

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Answer 5

Chapter 14, Problem 14.65P

Interpretation Introduction

(a)

Interpretation:

The two carbocation intermediates that can be produced by the addition of a proton to the given allene are to be drawn.

Concept introduction:

Allenes are compounds with cumulated double bonds. Because of this, they are electron-rich and undergo electrophilic addition with Brønsted acids. In the first step, the proton adds generally to one carbon of the double bond forming a carbocation intermediate with the positive charge on the other carbon of the initial double bond.

Interpretation Introduction

(b)

Interpretation:

The relative stabilities of the two carbocation intermediates formed by allene are to be explained.

Concept introduction:

The stability of a carbocation depends primarily on two factors, the number of alkyl groups attached to the carbon and resonance. Resonance stabilization is generally more than the stabilization because of the inductive electron-donating nature of alkyl groups. However, resonance requires the p orbitals of adjacent carbon (or other atoms) to be parallel to the empty p orbital of the carbocation.

Answer 6

Chapter 14, Problem 14.65P

Interpretation Introduction

(a)

Interpretation:

The two carbocation intermediates that can be produced by the addition of a proton to the given allene are to be drawn.

Concept introduction:

Allenes are compounds with cumulated double bonds. Because of this, they are electron-rich and undergo electrophilic addition with Brønsted acids. In the first step, the proton adds generally to one carbon of the double bond forming a carbocation intermediate with the positive charge on the other carbon of the initial double bond.

Answer 7

Chapter 14, Problem 14.65P

Interpretation Introduction

(a)

Interpretation:

The two carbocation intermediates that can be produced by the addition of a proton to the given allene are to be drawn.

Concept introduction:

Allenes are compounds with cumulated double bonds. Because of this, they are electron-rich and undergo electrophilic addition with Brønsted acids. In the first step, the proton adds generally to one carbon of the double bond forming a carbocation intermediate with the positive charge on the other carbon of the initial double bond.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The relative stabilities of the two carbocation intermediates formed by allene are to be explained.

Concept introduction:

The stability of a carbocation depends primarily on two factors, the number of alkyl groups attached to the carbon and resonance. Resonance stabilization is generally more than the stabilization because of the inductive electron-donating nature of alkyl groups. However, resonance requires the p orbitals of adjacent carbon (or other atoms) to be parallel to the empty p orbital of the carbocation.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The relative stabilities of the two carbocation intermediates formed by allene are to be explained.

Concept introduction:

The stability of a carbocation depends primarily on two factors, the number of alkyl groups attached to the carbon and resonance. Resonance stabilization is generally more than the stabilization because of the inductive electron-donating nature of alkyl groups. However, resonance requires the p orbitals of adjacent carbon (or other atoms) to be parallel to the empty p orbital of the carbocation.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 14 - Prob. 14.1P Ch. 14 - Prob. 14.2P Ch. 14 - Prob. 14.3P Ch. 14 - Prob. 14.4P Ch. 14 - Prob. 14.5P Ch. 14 - Prob. 14.6P Ch. 14 - Prob. 14.7P Ch. 14 - Prob. 14.8P Ch. 14 - Prob. 14.9P Ch. 14 - Prob. 14.10P

Solution Summary: The author explains the structure of the two carbocation intermediates produced by the addition of a proton to the given allene.

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Chapter 14 Solutions