The name of the alkene ( CH 3 CH 2 ) 2 CHCH=CHCH 3 has to be given. Concept Introduction: Alkenes : The simplest unsaturated hydrocarbon with a double bond is called as alkene. The name of alkane ends with “-ene” . Rules for naming compound: 1) The carbon atoms in the longest chain have to be counted. 2) The substituents and multiple bonds have to be identified and counted and the suffix “-ene” is added. 3) The backbone carbon atoms have to be numbered by assigning the lowest number from the starting end that contains the double bond.

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Answer 1

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Definition Definition Molecules that have multiple bonds between their carbon atoms. Alkenes are hydrocarbons with a double bond between two adjacent carbon atoms (R 2 C=CR 2 ), whereas alkynes are hydrocarbons with a triple bond between two adjacent carbon atoms R-C=C-R . These two groups are known as unsaturated hydrocarbons. They have fewer hydrogen atoms when compared with alkanes with same number of carbon atoms. The general molecular formula for an unsaturated hydrocarbon can be represented as C n H 2n +2 .

Chapter 11, Problem 11A.3BST

(a)

Interpretation Introduction

Interpretation:

The name of the alkene (CH3CH2)2CHCH=CHCH3 has to be given.

Concept Introduction:

Alkenes: The simplest unsaturated hydrocarbon with a double bond is called as alkene. The name of alkane ends with “-ene”.

Rules for naming compound:

1) The carbon atoms in the longest chain have to be counted.

2) The substituents and multiple bonds have to be identified and counted and the suffix “-ene” is added.

3) The backbone carbon atoms have to be numbered by assigning the lowest number from the starting end that contains the double bond.

(b)

Interpretation Introduction

Interpretation:

The structural formula of cyclopropene has to be written.

Concept Introduction:

Structural formula: A structural formula consists of symbols for the atoms connected by short lines that represent chemical bonds-one, two or three standing lines for single, double or triple bonds respectively.

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(1) Write a complete chemical equation showing reactants, products, and catalysts needed (if any) for the following reaction and (2) Draw and name the organic compound found in every reaction. (a) Complete hydrogenation of 2-Methylhexa-1,5-diene (b) Complete halogenation (Br2) of 3-Ethyl-2,2-dimethylhept-3-ene (c) Reaction of (4E)-2.4-Dimethylhexa-1,4-diene with a mole of water (d) Reaction of cis-3,3-Dimethyl-4-propylocta-1,5-diene with two mole of HBr (e) Reaction of trans-1-Bromo-3-chlorocyclopentane with potassium hydroxide (f) Formation of Gilman reagent using isopropyl bromide (g) Ozonolysis of 3,3-Dimethyloct-4-yne (h) Complete halogenation (Cl2) of 3-Ethyl-5-methyl-1,6,8-decatriyne (i) Partial hydrogenation using Lindlar's Catalyst 2,2,5,5-Tetramethylhex-3-yne (i) Reaction of 3.4-Dimethylcyclodecyne with sodium amide

Draw the constitutional (structural) isomers of C5H12 and then draw the structure of trans-2-butene, and then sketch the product that would result if this compound reacted with bromine, Br2.

Draw line structures for the following alkenes. Which can exist as cis–trans isomers? For those that can, draw both isomers.(a) 2-Methyloct-2-ene (b) Hept-3-ene(c) 3,4-Dimethylhex-3-ene

Answer 2

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Definition Definition Molecules that have multiple bonds between their carbon atoms. Alkenes are hydrocarbons with a double bond between two adjacent carbon atoms (R 2 C=CR 2 ), whereas alkynes are hydrocarbons with a triple bond between two adjacent carbon atoms R-C=C-R . These two groups are known as unsaturated hydrocarbons. They have fewer hydrogen atoms when compared with alkanes with same number of carbon atoms. The general molecular formula for an unsaturated hydrocarbon can be represented as C n H 2n +2 .

Chapter 11, Problem 11A.3BST

(a)

Interpretation Introduction

Interpretation:

The name of the alkene (CH3CH2)2CHCH=CHCH3 has to be given.

Concept Introduction:

Alkenes: The simplest unsaturated hydrocarbon with a double bond is called as alkene. The name of alkane ends with “-ene”.

Rules for naming compound:

1) The carbon atoms in the longest chain have to be counted.

2) The substituents and multiple bonds have to be identified and counted and the suffix “-ene” is added.

3) The backbone carbon atoms have to be numbered by assigning the lowest number from the starting end that contains the double bond.

(b)

Interpretation Introduction

Interpretation:

The structural formula of cyclopropene has to be written.

Concept Introduction:

Structural formula: A structural formula consists of symbols for the atoms connected by short lines that represent chemical bonds-one, two or three standing lines for single, double or triple bonds respectively.

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Answer 3

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Definition Definition Molecules that have multiple bonds between their carbon atoms. Alkenes are hydrocarbons with a double bond between two adjacent carbon atoms (R 2 C=CR 2 ), whereas alkynes are hydrocarbons with a triple bond between two adjacent carbon atoms R-C=C-R . These two groups are known as unsaturated hydrocarbons. They have fewer hydrogen atoms when compared with alkanes with same number of carbon atoms. The general molecular formula for an unsaturated hydrocarbon can be represented as C n H 2n +2 .

Chapter 11, Problem 11A.3BST

(a)

Interpretation Introduction

Interpretation:

The name of the alkene (CH3CH2)2CHCH=CHCH3 has to be given.

Concept Introduction:

Alkenes: The simplest unsaturated hydrocarbon with a double bond is called as alkene. The name of alkane ends with “-ene”.

Rules for naming compound:

1) The carbon atoms in the longest chain have to be counted.

2) The substituents and multiple bonds have to be identified and counted and the suffix “-ene” is added.

3) The backbone carbon atoms have to be numbered by assigning the lowest number from the starting end that contains the double bond.

(b)

Interpretation Introduction

Interpretation:

The structural formula of cyclopropene has to be written.

Concept Introduction:

Structural formula: A structural formula consists of symbols for the atoms connected by short lines that represent chemical bonds-one, two or three standing lines for single, double or triple bonds respectively.

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Answer 4

Question

Definition Definition Molecules that have multiple bonds between their carbon atoms. Alkenes are hydrocarbons with a double bond between two adjacent carbon atoms (R 2 C=CR 2 ), whereas alkynes are hydrocarbons with a triple bond between two adjacent carbon atoms R-C=C-R . These two groups are known as unsaturated hydrocarbons. They have fewer hydrogen atoms when compared with alkanes with same number of carbon atoms. The general molecular formula for an unsaturated hydrocarbon can be represented as C n H 2n +2 .

Chapter 11, Problem 11A.3BST

(a)

Interpretation Introduction

Interpretation:

The name of the alkene (CH3CH2)2CHCH=CHCH3 has to be given.

Concept Introduction:

Alkenes: The simplest unsaturated hydrocarbon with a double bond is called as alkene. The name of alkane ends with “-ene”.

Rules for naming compound:

1) The carbon atoms in the longest chain have to be counted.

2) The substituents and multiple bonds have to be identified and counted and the suffix “-ene” is added.

3) The backbone carbon atoms have to be numbered by assigning the lowest number from the starting end that contains the double bond.

(b)

Interpretation Introduction

Interpretation:

The structural formula of cyclopropene has to be written.

Concept Introduction:

Structural formula: A structural formula consists of symbols for the atoms connected by short lines that represent chemical bonds-one, two or three standing lines for single, double or triple bonds respectively.

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Answer 5

Chapter 11, Problem 11A.3BST

(a)

Interpretation Introduction

Interpretation:

The name of the alkene (CH3CH2)2CHCH=CHCH3 has to be given.

Concept Introduction:

Alkenes: The simplest unsaturated hydrocarbon with a double bond is called as alkene. The name of alkane ends with “-ene”.

Rules for naming compound:

1) The carbon atoms in the longest chain have to be counted.

2) The substituents and multiple bonds have to be identified and counted and the suffix “-ene” is added.

3) The backbone carbon atoms have to be numbered by assigning the lowest number from the starting end that contains the double bond.

(b)

Interpretation Introduction

Interpretation:

The structural formula of cyclopropene has to be written.

Concept Introduction:

Structural formula: A structural formula consists of symbols for the atoms connected by short lines that represent chemical bonds-one, two or three standing lines for single, double or triple bonds respectively.

Answer 6

Chapter 11, Problem 11A.3BST

(a)

Interpretation Introduction

Interpretation:

The name of the alkene (CH3CH2)2CHCH=CHCH3 has to be given.

Concept Introduction:

Alkenes: The simplest unsaturated hydrocarbon with a double bond is called as alkene. The name of alkane ends with “-ene”.

Rules for naming compound:

1) The carbon atoms in the longest chain have to be counted.

2) The substituents and multiple bonds have to be identified and counted and the suffix “-ene” is added.

3) The backbone carbon atoms have to be numbered by assigning the lowest number from the starting end that contains the double bond.

Answer 7

Chapter 11, Problem 11A.3BST

(a)

Interpretation Introduction

Interpretation:

The name of the alkene (CH3CH2)2CHCH=CHCH3 has to be given.

Concept Introduction:

Alkenes: The simplest unsaturated hydrocarbon with a double bond is called as alkene. The name of alkane ends with “-ene”.

Rules for naming compound:

1) The carbon atoms in the longest chain have to be counted.

2) The substituents and multiple bonds have to be identified and counted and the suffix “-ene” is added.

3) The backbone carbon atoms have to be numbered by assigning the lowest number from the starting end that contains the double bond.

Answer 8

(b)

Interpretation Introduction

Interpretation:

The structural formula of cyclopropene has to be written.

Concept Introduction:

Structural formula: A structural formula consists of symbols for the atoms connected by short lines that represent chemical bonds-one, two or three standing lines for single, double or triple bonds respectively.

Answer 9

(b)

Interpretation Introduction

Interpretation:

The structural formula of cyclopropene has to be written.

Concept Introduction:

Structural formula: A structural formula consists of symbols for the atoms connected by short lines that represent chemical bonds-one, two or three standing lines for single, double or triple bonds respectively.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 11 - Prob. 11A.1AST Ch. 11 - Prob. 11A.1BST Ch. 11 - Prob. 11A.2AST Ch. 11 - Prob. 11A.2BST Ch. 11 - Prob. 11A.3AST Ch. 11 - Prob. 11A.3BST Ch. 11 - Prob. 11A.4AST Ch. 11 - Prob. 11A.4BST Ch. 11 - Prob. 11A.5AST Ch. 11 - Prob. 11A.5BST

Solution Summary: The author explains the structural formula of cyclopropene, which consists of symbols for the atoms connected by short lines that represent chemical bonds.

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