Aluminum Sulfate and Ion Charges

This video tutorial explains how to write the chemical equation for aluminum sulfate (Al2(SO4)3) reacting with water (H2O). It begins by introducing the components of the equation and the nature of aluminum sulfate as an ionic compound. The video then demonstrates how to use a solubility table to confirm the solubility of aluminum sulfate in water. Following this, the tutorial guides viewers through the process of writing the chemical equation, including the dissociation of aluminum sulfate into its ions. The concept of aqueous solutions is explained, highlighting the significance of the 'aq' notation in chemical equations. The video concludes with a complete equation for the reaction, emphasizing the importance of understanding solubility and aqueous solutions in chemistry.

What type of compound is formed when a metal combines with a group of non-metals?

• Organic compound

• Metallic compound

• Ionic compound

• Covalent compound

What does the solubility table indicate about aluminum sulfate?

• It reacts violently with water

• It is soluble in water

• It is insoluble in water

• It does not react with water

What is the chemical formula for the sulfate ion?

• SO2^2-

• SO5^2-

• SO4^2-

• SO3^2-

When aluminum sulfate dissolves in water, what ions are formed?

• Aluminum ions and sulfate ions

• Hydrogen ions and oxygen ions

• Calcium ions and carbonate ions

• Sodium ions and chloride ions

What is the charge on the aluminum ion in the reaction?

• +3

• +1

• 0

• +2

Why do we need to use coefficients in the chemical equation for aluminum sulfate dissolving in water?

• To balance the number of atoms on each side

• To indicate the reaction speed

• To show the temperature of the reaction

• To represent the color change

How many sulfate ions are present in the aluminum sulfate compound?

• Three

• Two

• One

• Four

What does 'aq' signify in a chemical equation?

• Aqueous or dissolved in water

• Gas state

• Liquid state

• Solid state

Why is it unnecessary to write H2O on the product side of the equation?

• Because it is a gas

• Because 'aq' implies it is dissolved in water

• Because it is not part of the reaction

• Because it is a solid