Solubility of Sodium Phosphate

The video explores the solubility of sodium phosphate (Na3PO4) in water. It discusses three methods to determine solubility: memorizing solubility rules, using a solubility chart, and conducting a practical test. Sodium, a group one element, forms soluble compounds, and the solubility chart confirms that Na3PO4 is soluble. A practical test would show Na3PO4 dissolving in water, forming an aqueous solution. The video concludes that sodium phosphate is soluble in water.

What is the main topic discussed in the video?

• The chemical structure of sodium phosphate

• The environmental impact of sodium phosphate

• The solubility of sodium phosphate in water

• The industrial uses of sodium phosphate

According to solubility rules, why is sodium phosphate expected to be soluble?

• Because it is an organic compound

• Because it is a heavy metal compound

• Because sodium is a group one element

• Because it is a phosphate compound

What is the role of sodium in the solubility of sodium phosphate?

• It makes the compound insoluble

• It has no effect on solubility

• It enhances solubility due to being a group one element

• It reacts with water to form a gas

What does the solubility chart indicate about sodium phosphate?

• It is soluble in water

• It is partially soluble in water

• It is insoluble in water

• It reacts violently with water

What happens to sodium phosphate when it dissolves in water?

• It evaporates

• It forms a precipitate

• It breaks apart into ions

• It remains unchanged

Which ions are formed when sodium phosphate dissolves in water?

• Two sodium ions and one phosphate ion

• Three sodium ions and one phosphate ion

• One sodium ion and two phosphate ions

• Three sodium ions and two phosphate ions

Why are many phosphates generally insoluble in water?

• Because they form strong ionic bonds

• Because they are non-polar

• Because they are organic compounds

• Because they are heavy metals

What is a practical way to test the solubility of sodium phosphate?

• By heating it

• By mixing it with oil

• By placing it in water

• By freezing it

What is the expected outcome when sodium phosphate is placed in water?

• It will dissolve and form an aqueous solution

• It will not dissolve

• It will change color

• It will form a solid layer on top