Cobalt Bicarbonate Chemistry Concepts

The video tutorial explains how to write the chemical formula for Cobalt 3 Bicarbonate. It begins by identifying the element symbol for Cobalt and the significance of the Roman numeral indicating a 3+ charge. The tutorial then discusses the bicarbonate ion, its charge, and how it is sometimes referred to as the hydrogen carbonate ion. The video emphasizes the importance of balancing charges to achieve a net charge of zero, which is accomplished by using three bicarbonate ions to balance the 3+ charge of Cobalt. The tutorial concludes with the final formula for Cobalt 3 Bicarbonate: Co(HCO3)3.

What does the Roman numeral in Cobalt 3 bicarbonate indicate?

• The atomic mass of Cobalt

• The number of bicarbonate ions

• The charge of the Cobalt ion

• The number of Cobalt atoms

Which of the following is NOT a name for the bicarbonate ion?

• Hydrogen carbonate ion

• HCO3- ion

• Carbonate ion

• Bicarbonate ion

What is the charge of the bicarbonate ion?

• 2+

• 1-

• 3-

• 0

Why do we need three bicarbonate ions in the formula for Cobalt 3 bicarbonate?

• To match the number of Cobalt atoms

• To increase the molecular weight

• To balance the 3+ charge of Cobalt

• To stabilize the compound

What is the final formula for Cobalt 3 bicarbonate?

• Co2(HCO3)3

• Co(HCO3)2

• Co3(HCO3)2

• Co(HCO3)3

What is the role of parentheses in the formula Co(HCO3)3?

• To denote the molecular weight

• To group the bicarbonate ions together

• To show the charge of the ion

• To indicate the number of Cobalt atoms