Understanding Acetate Ion Resonance Structures

The video explains the resonance structures of the acetate ion (CH3COO-). It begins with an introduction to the acetate ion and its formation from acetic acid (CH3COOH) by losing a hydrogen ion. The video then describes the two resonance structures of the acetate ion, highlighting the placement of double and single bonds on the oxygen atoms. Both structures are valid Lewis structures, using all valence electrons and satisfying the octet rule. The video clarifies that these structures are not in equilibrium but represent an average structure in reality. The average structure has equivalent oxygen atoms with bond orders between single and double bonds. The video concludes with a summary of the key points discussed.

What is the acetate ion derived from?

• CH3COOH

• NaCl

• C6H12O6

• H2O

How many resonance structures can be drawn for the acetate ion?

• One

• Two

• Three

• Four

In the resonance structures of acetate ion, what is the bond configuration between carbon and oxygen?

• Double bond only

• One single and one double bond

• Single bond only

• Triple bond

What ensures the correctness of the Lewis structures for the acetate ion?

• Equal number of protons and electrons

• Presence of a triple bond

• Use of all valence electrons and octets for carbon and oxygen

• Presence of hydrogen bonds

What is the common misconception about resonance structures?

• They are identical

• They are in equilibrium

• They are not real

• They are unstable

What does the average of resonance structures represent?

• A non-existent structure

• A dynamic equilibrium

• A single structure

• A hybrid structure

Why do we draw resonance structures?

• To show the exact structure

• To illustrate chemical reactions

• To understand possible structures

• To depict molecular motion

What is the real-world representation of the acetate ion?

• A non-polar molecule

• An average of resonance structures

• A single resonance structure

• A dynamic equilibrium

What is the purpose of using arrows between resonance structures?

• To indicate chemical reactions

• To denote resonance

• To highlight differences

• To show equilibrium