Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Chapter 22, Problem 121AE

(a)

Interpretation Introduction

Interpretation: The following incorrectly named compounds are to be drawn and named correctly.

Concept introduction: Organic compounds contain carbon and hydrogen atoms with their respective functional groups. When they are named the root term, suffix and prefix are to be remembered. They are named according to the International Union of Pure and Applied Chemistry (IUPAC).

To determine: The correct name of the given compound and its structure is to be drawn.

(a)

Expert Solution
Check Mark

Answer to Problem 121AE

Answer

The correct name of the compound is 2,3,5,6Tetramethyloctane whose structure is shown in Figure 1.

Explanation of Solution

Explanation

The correct name of the compound is 2,3,5,6Tetramethyloctane whose structure is shown in Figure 1.

The structure of 2ethyl3methyl5isopropylhexane with its correct name is,

Chemistry, Chapter 22, Problem 121AE , additional homework tip  1

Figure 1

The root name hexane signifies the presence of six carbon atoms. 2ethyl, shows the presence of ethyl group on second carbon atom and 3methyl5isopropyl indicates the presence of methyl and isopropyl group on carbon three and fifth respectively. The correct name of this compound is 2,3,5,6Tetramethyloctane whose structure is shown in Figure 1.

(b)

Interpretation Introduction

Interpretation: The following incorrectly named compounds are to be drawn and named correctly.

Concept introduction: Organic compounds contain carbon and hydrogen atoms with their respective functional groups. When they are named the root term, suffix and prefix are to be remembered. They are named according to the International Union of Pure and Applied Chemistry (IUPAC).

To determine: The correct name of the given compound and its structure is to be drawn.

(b)

Expert Solution
Check Mark

Answer to Problem 121AE

Answer

The correct name of the compound is 2,3,5,6Tetramethyloctane whose structure is shown in Figure 2.

Explanation of Solution

Explanation

The correct name of the compound is 2,3,5,6Tetramethylheptane whose structure is shown in Figure 2.

The structure of 2ethyl4tertbutylpentane with its correct name is,

Chemistry, Chapter 22, Problem 121AE , additional homework tip  2

Figure 2

The root name is pentane which signifies the presence of five carbon atoms in a chain, 2ethyl4tertbutyl shows that ethyl and tertiary butyl groups are attached to carbon two and four respectively. This compound is correctly named as 2,3,5,6Tetramethylheptane because the longest carbon chain has seven carbon atoms which contains four methyl groups on carbon two three and five. Hence, the correct name is 2,3,5,6Tetramethylheptane.

(c)

Interpretation Introduction

Interpretation: The following incorrectly named compounds are to be drawn and named correctly.

Concept introduction: Organic compounds contain carbon and hydrogen atoms with their respective functional groups. When they are named the root term, suffix and prefix are to be remembered. They are named according to the International Union of Pure and Applied Chemistry (IUPAC).

To determine: The correct name of the given compound and its structure is to be drawn.

(c)

Expert Solution
Check Mark

Answer to Problem 121AE

Answer

The correct name of the compound is 2,3,4Trimethylhexane whose structure is shown in Figure 3.

Explanation of Solution

Explanation

The correct name of the compound is 2,3,4Trimethylhexane whose structure is shown in Figure 3.

The structure of 3-methyl 4-isopropylpentane with its correct name is,

Chemistry, Chapter 22, Problem 121AE , additional homework tip  3

Figure 3

The root name pentane signifies the presence of five carbon atoms in a chain and 3methyl4isopropyl shows the presence of methyl and isopropyl group on carbon three and four. The correct name of the compound is 2,3,4Trimethylhexane as the longest chain is of six carbon atoms containing three methyl groups on carbon two three and four respectively.

(d)

Interpretation Introduction

Interpretation: The following incorrectly named compounds are to be drawn and named correctly.

Concept introduction: Organic compounds contain carbon and hydrogen atoms with their respective functional groups. When they are named the root term, suffix and prefix are to be remembered. They are named according to the International Union of Pure and Applied Chemistry (IUPAC).

To determine: The correct name of the given compound and its structure is to be drawn.

(d)

Expert Solution
Check Mark

Answer to Problem 121AE

Answer

The correct name of the compound is 3methylpent1yne whose structure is shown in Figure 4.

Explanation of Solution

Explanation

The correct name of the compound is 3methylpent1yne whose structure is shown in Figure 4.

The structure of 2ethyl3butyne with its correct name is,

Chemistry, Chapter 22, Problem 121AE , additional homework tip  4

Figure 4

The root name butyne signifies the presence of four carbon atoms with a triple bond in a chain and 2ethyl shows the presence of ethyl group on second carbon atom. The correct name of the compound is 3methylpent1yne because of the longest carbon chain of five carbon atoms containing a methyl group on carbon three and triple bond on carbon number one.

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Chapter 22 Solutions

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