Aluminum Chlorate and Ionic Charges

This video tutorial explains how to write the chemical formula for aluminum chlorate. It begins by identifying aluminum and chlorate, noting that chlorate is a polyatomic ion with a 1- charge. The tutorial discusses the ionic charges of aluminum (3+) and chlorate, emphasizing the need to balance these charges to achieve a net charge of zero. The video demonstrates placing three chlorate ions with aluminum, using parentheses to indicate multiple ions, resulting in the formula Al(ClO3)3. The tutorial concludes with a thank you from Dr. B.

What is the first step in writing the formula for aluminum chlorate?

• Identify the charge of aluminum.

• Write the symbol for aluminum.

• Find chlorate on the periodic table.

• Determine the molecular weight of chlorate.

What is the charge of the chlorate ion?

• 2+

• 1-

• 3-

• 1+

Why is chlorate considered a polyatomic ion?

• It has a positive charge.

• It is found on the periodic table.

• It is made of a single element.

• It consists of multiple atoms bonded together.

What is the ionic charge of aluminum?

• 4+

• 1+

• 2+

• 3+

How many chlorate ions are needed to balance the charge of one aluminum ion?

• One

• Three

• Two

• Four

What is the correct formula for aluminum chlorate?

• Al(ClO3)2

• Al3(ClO3)

• AlClO3

• Al(ClO3)3

Why are parentheses used in the formula for aluminum chlorate?

• To separate aluminum from chlorate.

• To indicate the charge of aluminum.

• To group the chlorate ions together.

• To show the number of aluminum ions.