Cobalt Sulfate and Ionic Charges

The video tutorial explains how to write the chemical formula for Cobalt 6 sulfate. It begins by identifying the element symbol for Cobalt and the significance of the Roman numeral indicating a 6+ charge. The tutorial then discusses the sulfate ion, a polyatomic ion with a 2- charge, and how to balance these charges to form a neutral compound. By using three sulfate ions, the charges balance out, resulting in the formula Co(SO4)3. The video concludes with a summary of the process and the importance of understanding ionic charges.

What is the element symbol for Cobalt?

• Ca

• Cl

• Cb

• Co

What does the Roman numeral 6 indicate in Cobalt 6 sulfate?

• The number of sulfate ions

• The charge of Cobalt

• The atomic number of Cobalt

• The number of electrons

What is the chemical formula for the sulfate ion?

• SO3

• SO4

• SO5

• SO2

What is the ionic charge of the sulfate ion?

• 2+

• 3-

• 2-

• 1-

How many sulfate ions are needed to balance the charge of Cobalt 6 sulfate?

• Two

• One

• Four

• Three

What is the final chemical formula for Cobalt 6 sulfate?

• Co3(SO4)2

• Co(SO4)2

• Co2(SO4)3

• Co(SO4)3