Chemical Formulas and Ionic Charges

The video tutorial explains how to write the formula for aluminum acetate. It begins by identifying the element symbol for aluminum and the structure of the acetate ion, which is a polyatomic ion. The tutorial then discusses balancing the ionic charges between aluminum and acetate to form a neutral compound. Finally, it provides the complete formula for aluminum acetate and offers additional notes on its structure and chemical reactions.

What is the element symbol for aluminum?

• Au

• Am

• Ag

• Al

Which of the following is a polyatomic ion?

• Nitrogen

• Hydrogen

• Oxygen

• Acetate

What is the chemical formula for the acetate ion?

• CH4O-

• C2H5O-

• CH3COO-

• C2H3O2-

What charge does the acetate ion carry?

• 2+

• 1+

• 2-

• 1-

What is the ionic charge of aluminum?

• 1+

• 2+

• 4+

• 3+

Why is it necessary to balance charges in aluminum acetate?

• To increase its solubility

• To ensure it is a neutral compound

• To change its color

• To make it a gas

How many acetate ions are needed to balance one aluminum ion?

• Three

• One

• Four

• Two

What is the resulting formula for aluminum acetate?

• Al(C2H3O2)2

• Al(C2H3O2)3

• Al3(C2H3O2)

• Al2(C2H3O2)3

Why might aluminum be placed at the end of the formula?

• To emphasize its metallic nature

• To show it replaces hydrogen

• To indicate its role in reactions

• To highlight its reactivity

What role does the acetate ion play in chemical reactions?

• It increases the compound's density

• It changes the color of the compound

• It provides the hydrogen involved in reactions

• It acts as a catalyst