Cobalt and Carbonate Compounds

The video tutorial explains how to name the compound CoCO3. It begins by identifying cobalt as a transition metal and CO3 as a polyatomic ion, specifically the carbonate ion. The tutorial then discusses the importance of determining the charge of cobalt, which is 2+ to balance the 2- charge of the carbonate ion. Finally, it explains how to write the chemical name as cobalt(II) carbonate, using Roman numerals to indicate the charge of the cobalt ion.

What is the first step in naming CoCO3?

• Identify the charge of cobalt

• Find the molecular weight

• Recognize cobalt as a transition metal

• Determine the number of oxygen atoms

What is the name of the polyatomic ion CO3?

• Phosphate

• Sulfate

• Carbonate

• Nitrate

Why is it necessary to determine the charge of cobalt in CoCO3?

• To identify the number of atoms

• To balance the equation

• To find the molecular weight

• To ensure the net charge is zero

What charge does the carbonate ion (CO3) carry?

• 3-

• 1-

• 2-

• 2+

How is the charge of cobalt represented in the name of CoCO3?

• With a prefix

• With a subscript

• With a suffix

• With a Roman numeral

What is the correct name for CoCO3?

• Cobalt Monocarbonate

• Cobalt(II) Carbonate

• Cobalt(III) Carbonate

• Cobalt Carbonate

If given the name Cobalt(II) Carbonate, what is the formula?

• Co2CO3

• CoCO3

• Co(CO3)2

• Co2(CO3)3