Problem:  Azo dyes are organic dyes that are used for many applications, such as the coloring of fabrics. Many azo dyes are derivatives of the organic substance azobenzene, C12 H10 N2. A closely related substance is hydrazobenzene, C12 H12 N2. The Lewis structures of these two substances are showin in the diagram.  (Recall the shorthand notation used for organic molecules.)What is the hybridization at the N atom in each of the substances?

FREE Expert Solution

We’re asked to determine the hybridization of N in the given compounds

For this problem, we may do so by looking at the geometry of the molecules in question. 

The structure of Azobenzene is two Ns double bonded to one another; each is single bonded out to benzene and has one pair of dots.  In hydrazobenzene, the Ns are instead single bonded to each other and below to H.

Recall:

For azobenzene: The geometry of the molecule is bent/angular/V-shaped. Bent/angular/V-shaped geometry has 3 groups around the central atom. It is represented by the general formula AX2E1.

Where:

A → central atom
X → atoms bonded with the central element
E → lone pairs

Bent/Angular/V-shaped geometry:

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Problem Details

 Azo dyes are organic dyes that are used for many applications, such as the coloring of fabrics. Many azo dyes are derivatives of the organic substance azobenzene, C12 H10 N2. A closely related substance is hydrazobenzene, C12 H12 N2. The Lewis structures of these two substances are showin in the diagram.

 The structure of Azobenzene is two Ns double bonded to one another; each is single bonded out to benzene and has one pair of dots.  In hydrazobenzene, the Ns are instead single bonded to each other and below to H.

 (Recall the shorthand notation used for organic molecules.)

What is the hybridization at the N atom in each of the substances?

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