Aluminum Phosphate Solubility Concepts

The video explains the reaction between aluminum phosphate (AlPO4) and water (H2O). It discusses the solubility of aluminum phosphate, noting that it is mostly insoluble in water, with only a small amount dissolving. The video provides the equation for this minor dissolution, showing the dissociation into aluminum ions (Al3+) and phosphate ions. The conclusion reiterates the insolubility of aluminum phosphate, emphasizing that most of it remains a solid.

What is the main objective of the video regarding aluminum phosphate and water?

• To determine the color change of aluminum phosphate in water

• To write the equation for aluminum phosphate reacting with water

• To measure the temperature change when aluminum phosphate is added to water

• To find the pH level of aluminum phosphate in water

According to solubility rules, how do most phosphates behave in water?

• They react vigorously

• They change color

• They are highly soluble

• They are mostly insoluble

What happens to aluminum phosphate when it is placed in water?

• It dissolves completely

• It reacts with water to form a gas

• It remains mostly as a solid

• It changes color

What is the charge of the aluminum ion when aluminum phosphate dissolves slightly in water?

• 4+

• 1+

• 3+

• 2+

What does 'aq' signify when writing chemical equations?

• The substance is a liquid

• The substance is a solid

• The substance is a gas

• The substance is dissolved in water

How is the small amount of aluminum phosphate that dissolves represented in a chemical equation?

• As a color change

• As a temperature change

• As a complete reaction

• As a dissociation into ions

What is an alternative way to represent the dissolution of aluminum phosphate in water?

• By using a different chemical formula

• By using a different color

• By changing the state symbol to 's'

• By placing water above the reaction arrow

What is the primary state of aluminum phosphate in water?

• Aqueous

• Solid

• Liquid

• Gas

What does the video emphasize about the solubility of aluminum phosphate?

• It is mostly insoluble

• It reacts with water

• It is highly soluble

• It changes color

Who is the presenter of the video?

• Dr. B

• Dr. A

• Dr. D

• Dr. C