Sulfate Ion Concepts and Properties

The video tutorial explains the composition of the sulfate ion (SO4 2-), highlighting its occurrence in compounds like sodium sulfate and iron(II) sulfate. It details the ionic charge, explaining that the 2- charge indicates two extra electrons, making it an anion. The tutorial then counts the atoms in the sulfate ion, identifying one sulfur and four oxygen atoms, totaling five atoms. The ionic charge does not affect the atom count but is crucial for understanding chemical reactivity. Dr. B concludes by reiterating the atom count and the importance of the ionic charge.

What is the chemical formula for the sulfate ion?

• SO5 2-

• SO2 2-

• SO4 2-

• SO3 2-

In which of the following compounds would you find the sulfate ion?

• Sodium chloride

• Iron(II) sulfate

• Calcium carbonate

• Magnesium oxide

What does the '2-' in SO4 2- signify?

• Two extra electrons

• Two extra neutrons

• Two extra protons

• Two missing electrons

Why is the sulfate ion considered an anion?

• It has a negative charge

• It has a neutral charge

• It has a positive charge

• It has no charge

How many oxygen atoms are present in the sulfate ion?

• Five

• Four

• Three

• Two

What is the total number of atoms in the sulfate ion?

• Six

• Four

• Seven

• Five