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Organic And Biological Chemistry

7th Edition
STOKER + 1 other
ISBN: 9781305081079

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BuyFindarrow_forward

Organic And Biological Chemistry

7th Edition
STOKER + 1 other
ISBN: 9781305081079
Textbook Problem

How many of the 18 C8 alkane constitutional isomers are named using the following base-chain names?

  1. a. Octane
  2. b. Heptane
  3. c. Hexane
  4. d. Pentane

(a)

Interpretation Introduction

Interpretation:

The number of alkane constitutional isomers that can be named using the base name as octane has to be given.

Concept Introduction:

Organic compounds are represented shortly by the molecular formula and structural formula.  Each and every compound has its own molecular formula.  Compounds can have same molecular formula but not same structural formula.

Isomers are the compounds that have same molecular formula but different structural formula.  The main difference lies in the way the atoms are arranged in the structure.  Isomers have different chemical and physical properties even when they have same molecular formula.  This is known as Isomerism.

If there is difference only in the connectivity of the atoms in the molecule, then it is known as constitutional isomerism.  The isomers are known as constitutional isomers.  They will have same molecular formula and same functional group, but they differ in the connectivity between the atoms in the molecule.

Continuous-chain alkane is the one in which all the carbon atoms are bonded in a linear chain (non-branching chain).

Branched-chain alkane is an alkane which has atleast one branch in its structure that is attached to the continuous chain of carbon atoms.

Explanation

Given alkane is said to contain eight carbon atoms.  Base name is the longest‑carbon chain in the given compound.  The base‑chain name given in the problem statement is octane...

(b)

Interpretation Introduction

Interpretation:

The number of alkane constitutional isomers that can be named using the base name as heptane has to be given.

Concept Introduction:

Organic compounds are represented shortly by the molecular formula and structural formula.  Each and every compound has its own molecular formula.  Compounds can have same molecular formula but not same structural formula.

Isomers are the compounds that have same molecular formula but different structural formula.  The main difference lies in the way the atoms are arranged in the structure.  Isomers have different chemical and physical properties even when they have same molecular formula.  This is known as Isomerism.

If there is difference only in the connectivity of the atoms in the molecule, then it is known as constitutional isomerism.  The isomers are known as constitutional isomers.  They will have same molecular formula and same functional group, but they differ in the connectivity between the atoms in the molecule.

Continuous-chain alkane is the one in which all the carbon atoms are bonded in a linear chain (non-branching chain).

Branched-chain alkane is an alkane which has atleast one branch in its structure that is attached to the continuous chain of carbon atoms.

(c)

Interpretation Introduction

Interpretation:

The number of alkane constitutional isomers that can be named using the base name as hexane has to be given.

Concept Introduction:

Organic compounds are represented shortly by the molecular formula and structural formula.  Each and every compound has its own molecular formula.  Compounds can have same molecular formula but not same structural formula.

Isomers are the compounds that have same molecular formula but different structural formula.  The main difference lies in the way the atoms are arranged in the structure.  Isomers have different chemical and physical properties even when they have same molecular formula.  This is known as Isomerism.

If there is difference only in the connectivity of the atoms in the molecule, then it is known as constitutional isomerism.  The isomers are known as constitutional isomers.  They will have same molecular formula and same functional group, but they differ in the connectivity between the atoms in the molecule.

Continuous-chain alkane is the one in which all the carbon atoms are bonded in a linear chain (non-branching chain).

Branched-chain alkane is an alkane which has atleast one branch in its structure that is attached to the continuous chain of carbon atoms.

(d)

Interpretation Introduction

Interpretation:

The number of alkane constitutional isomers that can be named using the base name as pentane has to be given.

Concept Introduction:

Organic compounds are represented shortly by the molecular formula and structural formula.  Each and every compound has its own molecular formula.  Compounds can have same molecular formula but not same structural formula.

Isomers are the compounds that have same molecular formula but different structural formula.  The main difference lies in the way the atoms are arranged in the structure.  Isomers have different chemical and physical properties even when they have same molecular formula.  This is known as Isomerism.

If there is difference only in the connectivity of the atoms in the molecule, then it is known as constitutional isomerism.  The isomers are known as constitutional isomers.  They will have same molecular formula and same functional group, but they differ in the connectivity between the atoms in the molecule.

Continuous-chain alkane is the one in which all the carbon atoms are bonded in a linear chain (non-branching chain).

Branched-chain alkane is an alkane which has atleast one branch in its structure that is attached to the continuous chain of carbon atoms.

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