The statement that a weaker bond is usually more reactive than one with stronger bonds is to be explained. Concept introduction: A covalent bond is formed by the interaction of two nonmetals. Covalent compounds are formed by the sharing of electrons between two or more atoms. A covalent bond is the strong forces of attraction between the shared pairs of electrons and the nuclei of the combining atoms. In the covalent bond, bond energy is the energy needed to overcome the attractive forces between the nuclei of atoms and the shared pair of electrons. Bond energy is the enthalpy change associated with breaking of bond of 1 mol of gaseous molecule. The enthalpy associated with equation (1) is Δ H bond breaking or BE AB . AB ( g ) → A ( g ) + B ( g ) (1) The bond energy of a bond is directly related to the bond strength of a bond. Greater the bond strength of the bond more will be the bond energy of the bond and vice-versa.

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Chapter 9, Problem 9.43P

Interpretation Introduction

Interpretation:

The statement that a weaker bond is usually more reactive than one with stronger bonds is to be explained.

Concept introduction:

A covalent bond is formed by the interaction of two nonmetals. Covalent compounds are formed by the sharing of electrons between two or more atoms. A covalent bond is the strong forces of attraction between the shared pairs of electrons and the nuclei of the combining atoms.

In the covalent bond, bond energy is the energy needed to overcome the attractive forces between the nuclei of atoms and the shared pair of electrons. Bond energy is the enthalpy change associated with breaking of bond of 1 mol of gaseous molecule. The enthalpy associated with equation (1) is ΔHbond breaking or BEAB.

AB(g)→A(g)+B(g) (1)

The bond energy of a bond is directly related to the bond strength of a bond. Greater the bond strength of the bond more will be the bond energy of the bond and vice-versa.

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