Cobalt Compounds and Acetate Ions

The video tutorial explains how to name the compound Co(CH3COO)3. It begins by identifying cobalt as a transition metal and CH3COO as the acetate ion, a polyatomic ion. The tutorial then guides viewers through writing the name of the metal, cobalt, as it appears on the periodic table. It explains the importance of recognizing the acetate ion and determining the charge balance between cobalt and acetate ions. Finally, the video concludes with the complete name of the compound, cobalt(III) acetate, highlighting the use of a Roman numeral to indicate the charge of the cobalt ion.

What type of metal is cobalt in the compound Co(CH3COO)3?

• Alkali metal

• Alkaline earth metal

• Transition metal

• Noble gas

What is the polyatomic ion present in Co(CH3COO)3?

• Nitrate ion

• Sulfate ion

• Carbonate ion

• Acetate ion

Which of the following is an alternative representation of the acetate ion?

• C3H6O3

• C2H3O2

• CH4O

• C2H5O

What is the first step in naming the compound Co(CH3COO)3?

• Determine the number of acetate ions

• Write the name of the polyatomic ion

• Identify the charge of cobalt

• Write the name of the metal as it appears on the periodic table

Why is a Roman numeral used in the name of Co(CH3COO)3?

• To represent the molecular weight

• To denote the number of atoms in the compound

• To indicate the number of acetate ions

• To show the charge of the cobalt ion

What is the charge of the acetate ion in Co(CH3COO)3?

• 2+

• 1-

• 3+

• 0

How many acetate ions are present in Co(CH3COO)3?

• One

• Three

• Two

• Four

What is the full name of the compound Co(CH3COO)3?

• Cobalt(IV) acetate

• Cobalt acetate

• Cobalt(II) acetate

• Cobalt(III) acetate