Solubility and Properties of Phosphates

The video explores whether potassium phosphate (K3PO4) is an electrolyte or non-electrolyte. It explains that electrolytes dissolve in water to produce ions, which conduct electricity. Potassium phosphate is an ionic compound, and according to solubility rules, phosphates bonded to group one elements like potassium are soluble. Therefore, K3PO4 dissolves in water, producing ions, making it a strong electrolyte that conducts electricity well.

What is an electrolyte?

• A substance that dissolves in water and produces ions

• A metal that conducts electricity

• A non-metal that does not conduct electricity

• A substance that does not dissolve in water

What type of compound is potassium phosphate?

• Non-metallic compound

• Metallic compound

• Ionic compound

• Covalent compound

Which group of elements does potassium belong to?

• Group 2

• Group 4

• Group 3

• Group 1

Why are phosphates bonded to group one elements like potassium soluble?

• Because they are metallic

• Because they are covalent

• Because they are non-metallic

• Because they are ionic

What is the charge of the phosphate ion in K3PO4?

• PO4 2-

• PO4 3-

• PO4 4-

• PO4 1-

What happens to K3PO4 when it dissolves in water?

• It forms a precipitate

• It remains unchanged

• It breaks apart into ions

• It evaporates

Why is K3PO4 considered a strong electrolyte?

• Because it is a covalent compound

• Because it is a weak conductor of electricity

• Because it produces ions and conducts electricity well

• Because it does not dissolve in water