Sodium Sulfate and Ion Charges

The video tutorial explains how to write the chemical formula for sodium sulfate (Na2SO4). It begins by identifying sodium as a metal with a +1 charge and sulfate as a polyatomic ion with a -2 charge. The tutorial demonstrates how to balance these charges by using two sodium atoms to achieve a net charge of zero, resulting in the correct formula Na2SO4. The video concludes with a recommendation for further practice on breslin.org.

What type of compound is sodium sulfate?

• Covalent

• Ionic

• Metallic

• Molecular

What is the charge of a sodium ion?

• +2

• 0

• -1

• +1

Where can you find the sulfate ion information?

• In a list of noble gases

• In the periodic table

• In a list of common polyatomic ions

• In a list of metals

What is the charge of the sulfate ion?

• -1

• +2

• +1

• -2

How many sodium ions are needed to balance the charge of one sulfate ion?

• Two

• Four

• Three

• One

What is the correct formula for sodium sulfate?

• Na2SO3

• NaSO3

• NaSO4

• Na2SO4