The reactant that is required to convert 2-butene to 2,3-dichlorobutane has to be identified from the given options. Concept Introduction: Chemical reaction in which an atom or a group of atoms are added to each carbon atom of a carbon‑carbon multiple bond in a hydrocarbon or hydrocarbon derivative is known as addition reaction. In this reaction no atoms or group of atoms are removed. Instead the unsaturated bond is reduced to saturated bond. A general scheme for addition reaction of alkene can be given as shown below, Addition reactions can be classified broadly into two types. They are asymmetrical addition reaction and symmetrical addition reaction. Symmetrical addition reactions is the one in which the same atom or same group of atoms are added across the carbon‑carbon multiple bonds. Unsymmetrical addition reactions is the one in which the different atom or different group of atoms are added across the carbon‑carbon multiple bonds. Halogenation is an symmetrical addition reaction. In this reaction two halogen atoms are added across the multiple bond. The product formed is dihaloalkane. This reaction does not require any catalyst.

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Chapter 13.10, Problem 4QQ

Interpretation Introduction

Interpretation:

The reactant that is required to convert 2-butene to 2,3-dichlorobutane has to be identified from the given options.

Concept Introduction:

Chemical reaction in which an atom or a group of atoms are added to each carbon atom of a carbon‑carbon multiple bond in a hydrocarbon or hydrocarbon derivative is known as addition reaction.

In this reaction no atoms or group of atoms are removed. Instead the unsaturated bond is reduced to saturated bond. A general scheme for addition reaction of alkene can be given as shown below,

Addition reactions can be classified broadly into two types. They are asymmetrical addition reaction and symmetrical addition reaction.

Symmetrical addition reactions is the one in which the same atom or same group of atoms are added across the carbon‑carbon multiple bonds.

Unsymmetrical addition reactions is the one in which the different atom or different group of atoms are added across the carbon‑carbon multiple bonds.

Halogenation is an symmetrical addition reaction. In this reaction two halogen atoms are added across the multiple bond. The product formed is dihaloalkane. This reaction does not require any catalyst.

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