Valence Electrons and Functional Groups

Dr. B explains how to draw the Lewis structure of acetic acid, focusing on the COOH functional group, a common feature in organic chemistry. The video guides viewers through attaching the COOH group to CH3, ensuring all 24 valence electrons are used correctly. The tutorial concludes with a review of the completed structure.

What is the significance of the COOH group in organic chemistry?

• It is only found in inorganic compounds.

• It is a common functional group.

• It is a rare functional group.

• It is not a functional group.

How is the COOH group connected to the rest of the acetic acid molecule?

• It is attached to a CH4 group.

• It is attached to a CH2 group.

• It is attached to a C2H5 group.

• It is attached to a CH3 group.

How many valence electrons are used in the acetic acid Lewis structure?

• 20

• 22

• 24

• 26

What is the total number of valence electrons in acetic acid?

• 18

• 20

• 22

• 24

Why is it important to count valence electrons in a Lewis structure?

• To verify the structure is complete.

• To ensure all electrons are paired.

• To find the number of protons.

• To determine the molecular weight.