Ionic Compounds and Reactions

The video tutorial explains the process of writing the chemical equation for the reaction of sodium phosphate (Na3PO4) with water (H2O). It begins by introducing sodium phosphate as an ionic compound and discusses its solubility in water, referencing solubility rules. The tutorial then explores the ionic charges of sodium and phosphate ions, demonstrating how Na3PO4 dissolves in water to form Na+ and PO4^3- ions. Finally, the video presents the complete chemical equation for this dissolution process, emphasizing the aqueous state of the ions.

What type of compound is sodium phosphate?

• Covalent compound

• Ionic compound

• Metallic compound

• Molecular compound

What is the state of water in the reaction with sodium phosphate?

• Plasma

• Solid

• Gas

• Liquid

According to solubility rules, why is sodium phosphate soluble in water?

• Because it is a covalent compound

• Because it contains a Group 1 element

• Because it contains a transition metal

• Because it is a gas

What is the ionic charge of a sodium ion?

• 2+

• 1+

• 3+

• 1-

What is the ionic charge of the phosphate ion?

• 3-

• 2-

• 1-

• 4-

How many sodium ions are produced when sodium phosphate dissociates in water?

• Four

• Three

• Two

• One

What does 'aq' signify when written next to an ion in a chemical equation?

• The ion is in gaseous form

• The ion is in liquid form

• The ion is in solid form

• The ion is dissolved in water

Where is water sometimes placed in the chemical equation for sodium phosphate and water?

• Above the arrow

• To the right of the products

• Below the arrow

• To the left of the reactants

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

• Because it is a reactant

• Because it is a gas

• Because it is already implied by 'aq'

• Because it is a solid

Who is the presenter of the video?

• Dr. D

• Dr. C

• Dr. B

• Dr. A