Solubility of Potassium Phosphate

The video explores the solubility of potassium phosphate (K3PO4) in water. It discusses three methods to determine solubility: memorizing solubility rules, using a solubility chart, and conducting a practical experiment. Potassium phosphate is confirmed to be soluble in water through these methods, as it dissociates into potassium and phosphate ions when dissolved.

What is the main topic discussed in the video?

• The industrial uses of potassium phosphate

• The solubility of potassium phosphate in water

• The chemical structure of potassium phosphate

• The history of potassium compounds

According to solubility rules, why is K3PO4 considered soluble?

• Because it is a gas at room temperature

• Because it contains a group 1 element, potassium

• Because it is a compound of a transition metal

• Because it is a non-metal compound

What does the 'S' symbol in the solubility chart indicate?

• The compound is insoluble

• The compound is a solid

• The compound is soluble

• The compound is slightly soluble

How many potassium ions are produced when K3PO4 dissolves in water?

• Three

• Two

• Four

• One

What is the charge of the phosphate ion in K3PO4?

• 4-

• 2-

• 1-

• 3-

What is the final method mentioned to test the solubility of K3PO4?

• Heating it to a high temperature

• Dissolving it in water

• Conducting a flame test

• Using a pH meter

What is expected to happen when K3PO4 is placed in water?

• It will remain a solid

• It will dissolve and dissociate into ions

• It will form a precipitate

• It will evaporate

Who is the presenter of the video?

• Dr. B

• Dr. A

• Dr. D

• Dr. C