Among the given statements, the statement that is true concerning with aromatic hydrocarbons has to be chosen. 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. Alkanes are hydrocarbons that contain only single bonds between the carbon atoms. Therefore, there is no possibility of addition reaction. Alkanes undergo only substitution reactions. Alkenes and cycloalkenes are hydrocarbons that contain at least one double bond in its structure. Addition reaction can take place across the double bond. Alkynes are compounds that contain at least one triple bond between the carbon atoms in its structure. Addition reaction takes place across the triple bond. Aromatic compounds undergo substitution reactions rather than addition reactions even though they contain double bonds. This is because the double bonds are involved in delocalization.

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Chapter 13.15, Problem 3QQ

Interpretation Introduction

Interpretation:

Among the given statements, the statement that is true concerning with aromatic hydrocarbons has to be chosen.

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.

Alkanes are hydrocarbons that contain only single bonds between the carbon atoms. Therefore, there is no possibility of addition reaction. Alkanes undergo only substitution reactions. Alkenes and cycloalkenes are hydrocarbons that contain at least one double bond in its structure. Addition reaction can take place across the double bond. Alkynes are compounds that contain at least one triple bond between the carbon atoms in its structure. Addition reaction takes place across the triple bond. Aromatic compounds undergo substitution reactions rather than addition reactions even though they contain double bonds. This is because the double bonds are involved in delocalization.

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