Sulfate Ion and Sodium Compounds

The video tutorial explains the composition of sodium sulfate (Na2SO4), focusing on the ions present. Sodium, found in group one of the periodic table, forms Na+ ions, and there are two such ions in sodium sulfate. The sulfate ion (SO4) is a significant ion in chemistry with a 2- charge. The tutorial emphasizes the importance of memorizing the sulfate ion and explains that sodium sulfate consists of two sodium ions and one sulfate ion, resulting in a total of three ions. Dr. B concludes the video by summarizing the ionic composition of sodium sulfate.

What is the chemical formula for sodium sulfate?

• NaSO3

• Na2S

• NaSO4

• Na2SO4

Which group in the periodic table does sodium belong to?

• Group 1

• Group 3

• Group 4

• Group 2

What is the charge of a sulfate ion?

• 2-

• 1-

• 2+

• 1+

Why is the sulfate ion important in chemistry?

• It is only found in organic compounds.

• It is a common ion with a stable charge.

• It is rarely found in compounds.

• It has a variable charge.

How many sodium ions are present in sodium sulfate?

• Four

• Two

• One

• Three

What is the total number of ions in sodium sulfate?

• Three

• Two

• Five

• Four