Aluminum Carbonate and Ions

The video tutorial explains how to determine the number of ions in a formula unit of aluminum carbonate (Al2(CO3)3). It covers the identification of aluminum as a metal and carbonate as a group of non-metals, forming an ionic compound. The tutorial details the ionic charges of aluminum (3+) and the polyatomic carbonate ion (2-), emphasizing the need for the net charge of the compound to be zero. The calculation shows two aluminum ions and three carbonate ions, totaling five ions in the formula unit. The video concludes with a summary of the ion count.

What is the chemical formula for aluminum carbonate?

• Al2(CO4)3

• Al3(CO3)2

• Al(CO3)2

• Al2(CO3)3

Which group does aluminum belong to in the periodic table?

• Group 1

• Group 13

• Group 17

• Group 2

What is the charge of a carbonate ion?

• 2+

• 1+

• 1-

• 2-

How many carbonate ions are present in one formula unit of aluminum carbonate?

• One

• Two

• Four

• Three

What is the net charge of the aluminum carbonate compound?

• 3+

• 1+

• 0

• 2-

How many aluminum ions are present in one formula unit of aluminum carbonate?

• Four

• Three

• Two

• One

What is the total number of ions in one formula unit of aluminum carbonate?

• Seven

• Six

• Four

• Five