Cobalt 3 Carbonate Concepts

The video tutorial explains how to write the formula for cobalt(III) carbonate. It begins by identifying cobalt as a transition metal with a 3+ charge and explains that carbonate is a polyatomic ion with a 2- charge. The tutorial demonstrates how to balance these charges using the crisscross method, resulting in the formula Co2(CO3)3. The video concludes by verifying the charge balance to ensure the formula is correct.

What is the charge of cobalt in cobalt 3 carbonate?

• 3+

• 2+

• 4+

• 1+

What type of ion is carbonate?

• Monatomic ion

• Polyatomic ion

• Cation

• Anion

What is the charge of the carbonate ion?

• 3-

• 2-

• 1-

• 4-

Which method is used to balance the charges in cobalt 3 carbonate?

• Addition method

• Crisscross method

• Elimination method

• Substitution method

What is the correct formula for cobalt 3 carbonate?

• Co(CO3)2

• Co3(CO3)2

• Co2(CO3)3

• CoCO3

Why are parentheses used in the formula for cobalt 3 carbonate?

• To denote a transition metal

• To separate different elements

• To show the number of cobalt atoms

• To indicate a polyatomic ion

What should you be careful about when writing the formula for cobalt 3 carbonate?

• Using uppercase for the carbonate ion

• Using lowercase for the carbonate ion

• Using lowercase for the oxygen in cobalt

• Using uppercase for all letters

How do you verify the formula for cobalt 3 carbonate?

• By checking the color of the compound

• By counting the number of atoms

• By measuring the mass of the compound

• By ensuring the net charge is zero

What is the net charge of cobalt 3 carbonate?

• 0

• 2+

• 3-

• 1+

What is the role of Dr. B in the video?

• To introduce new elements

• To discuss the periodic table

• To explain the formula for cobalt 3 carbonate

• To demonstrate a chemical reaction