Among the given pair of alkynes , the one which has a smaller heat of hydrogenation is to be identified. Concept introduction: The addition of H 2 is known as hydrogenation reaction. This is a syn addition. Alkyne is reduced to alkane . In this reaction, two weak pi bond of alkyne and sigma bond between H 2 is broken and four C − H bonds are formed.

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Answer 1

Question

Chapter 12.5, Problem 9P

Interpretation Introduction

Interpretation: Among the given pair of alkynes, the one which has a smaller heat of hydrogenation is to be identified.

Concept introduction: The addition of H2 is known as hydrogenation reaction. This is a syn addition. Alkyne is reduced to alkane. In this reaction, two weak pi bond of alkyne and sigma bond between H2 is broken and four C−H bonds are formed.

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Answer 2

Question

Chapter 12.5, Problem 9P

Interpretation Introduction

Interpretation: Among the given pair of alkynes, the one which has a smaller heat of hydrogenation is to be identified.

Concept introduction: The addition of H2 is known as hydrogenation reaction. This is a syn addition. Alkyne is reduced to alkane. In this reaction, two weak pi bond of alkyne and sigma bond between H2 is broken and four C−H bonds are formed.

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Answer 3

Question

Chapter 12.5, Problem 9P

Interpretation Introduction

Interpretation: Among the given pair of alkynes, the one which has a smaller heat of hydrogenation is to be identified.

Concept introduction: The addition of H2 is known as hydrogenation reaction. This is a syn addition. Alkyne is reduced to alkane. In this reaction, two weak pi bond of alkyne and sigma bond between H2 is broken and four C−H bonds are formed.

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Answer 4

Question

Chapter 12.5, Problem 9P

Interpretation Introduction

Interpretation: Among the given pair of alkynes, the one which has a smaller heat of hydrogenation is to be identified.

Concept introduction: The addition of H2 is known as hydrogenation reaction. This is a syn addition. Alkyne is reduced to alkane. In this reaction, two weak pi bond of alkyne and sigma bond between H2 is broken and four C−H bonds are formed.

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Answer 5

Chapter 12.5, Problem 9P

Interpretation Introduction

Interpretation: Among the given pair of alkynes, the one which has a smaller heat of hydrogenation is to be identified.

Concept introduction: The addition of H2 is known as hydrogenation reaction. This is a syn addition. Alkyne is reduced to alkane. In this reaction, two weak pi bond of alkyne and sigma bond between H2 is broken and four C−H bonds are formed.

Answer 6

Chapter 12.5, Problem 9P

Interpretation Introduction

Interpretation: Among the given pair of alkynes, the one which has a smaller heat of hydrogenation is to be identified.

Concept introduction: The addition of H2 is known as hydrogenation reaction. This is a syn addition. Alkyne is reduced to alkane. In this reaction, two weak pi bond of alkyne and sigma bond between H2 is broken and four C−H bonds are formed.

Answer 7

Chapter 12.5, Problem 9P

Interpretation Introduction

Interpretation: Among the given pair of alkynes, the one which has a smaller heat of hydrogenation is to be identified.

Concept introduction: The addition of H2 is known as hydrogenation reaction. This is a syn addition. Alkyne is reduced to alkane. In this reaction, two weak pi bond of alkyne and sigma bond between H2 is broken and four C−H bonds are formed.

Answer 8

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Answer 11

Ch. 12.1 - Prob. 1P Ch. 12.3 - Problem 12.2 What alkane is formed when each...Ch. 12.3 - Prob. 3P Ch. 12.3 - Prob. 4P Ch. 12.3 - Prob. 5P Ch. 12.3 - Prob. 6P Ch. 12.3 - Compound Molecular formula before...Ch. 12.4 - Problem 12.8 Draw the products formed when...Ch. 12.5 - Prob. 9P Ch. 12.5 - Prob. 10P

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