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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Amides are an important class of organic molecules. They are usually drawn as sketched here, but another resonance structure is possible.

images

  1. (a) Draw a second resonance structure of the structure above. Do you think that this should be a significant contributor to the bonding? Explain your answer.
  2. (b) The H—N—H angle is close to 120° in this molecule. Does this fact influence your thoughts on the importance of this structure?

(a)

Interpretation Introduction

Interpretation:

The second resonance structure of the given acetamide has to be drawn and explained.

Concept Introduction:

When a single Lewis structure does not represent a substance, the true structure is the intermediate between two or more structures which is called a resonance structure.

Explanation

The given structure is

The second resonance structure is given below,

Due to the unequal resonance form the minor contributor can have an influence on structure and bonding as given below,

(b)

Interpretation Introduction

Interpretation:

Concept Introduction:

Bond angle is the angle formed between three atoms across atleast two bonds.

When a single Lewis structure does not represent a substance, the true structure is the intermediate between two or more structures which is called a resonance structure.

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