Understanding the Lewis Structure of Sulfuric Acid

This video tutorial explains how to draw the Lewis structure of sulfuric acid (H2SO4). It begins by identifying sulfur as the central atom and discusses the placement of hydrogen and oxygen atoms. The tutorial then focuses on drawing the Lewis structure of the sulfate ion, calculating valence electrons, and understanding the concept of expanded octet for sulfur. It also covers the calculation of formal charges and finalizes the structure by adding hydrogen ions to the sulfate ion, resulting in a neutral charge for each oxygen atom.

What is the central atom in the Lewis structure of sulfuric acid?

• Hydrogen

• Sulfur

• Oxygen

• Carbon

Why is it helpful to draw the Lewis structure of sulfate before sulfuric acid?

• To determine the number of hydrogen atoms

• To understand the placement of hydrogen atoms

• To calculate the molecular weight

• To identify the central atom

How many valence electrons are present in the sulfate ion?

• 32

• 36

• 24

• 30

What is an expanded octet, and which element in sulfuric acid can have it?

• More than eight electrons; Oxygen

• More than eight electrons; Sulfur

• Less than eight electrons; Sulfur

• Less than eight electrons; Oxygen

What is the formal charge of sulfur in the best Lewis structure of sulfate?

• 0

• +1

• +2

• -1

How many bonds does sulfur form in the sulfate ion to achieve a formal charge of zero?

• Seven

• Six

• Five

• Four

What is the formal charge on an oxygen atom with two bonds in the sulfate ion?

• +2

• -1

• 0

• +1

What happens to the formal charge of oxygen when it forms one bond?

• It becomes positive

• It becomes zero

• It becomes negative

• It remains neutral

How do hydrogen ions interact with the sulfate ion to form sulfuric acid?

• They form ionic bonds with sulfur

• They do not interact

• They form covalent bonds with sulfur

• They form bonds with negatively charged oxygen atoms

What is the charge on each oxygen atom in the final Lewis structure of sulfuric acid?

• +2

• +1

• 0

• -1