Iron(II) Phosphate in Water

The video explores the reaction of iron II phosphate (Fe3(PO4)2) with water (H2O). It explains that iron II phosphate is generally insoluble in water, meaning it remains a solid when placed in water. However, a very small amount does dissolve, and the video provides the equation for this minor dissolution. The phosphate ion has a three-minus charge, requiring a two-plus charge from iron ions to balance. The video concludes by noting that while the compound is mostly insoluble, the small dissolved portion can be represented in an equation.

What is the main focus of the video tutorial?

• The reaction between iron(II) phosphate and water

• The properties of water

• The history of iron compounds

• The uses of phosphates in industry

What is the state of iron(II) phosphate when it is added to water?

• Plasma

• Gas

• Solid

• Liquid

Why is iron(II) phosphate considered insoluble in water?

• It reacts violently with water

• It forms a gas when mixed with water

• It remains mostly undissolved in water

• It changes color in water

What happens to iron(II) phosphate when it is placed in water?

• It turns into a gas

• It dissolves completely

• It remains a solid at the bottom

• It evaporates

What is the charge of the phosphate ion in the equation?

• 2-

• 3+

• 1+

• 3-

How many iron ions are needed to balance the phosphate ions?

• One

• Two

• Three

• Four

What does 'aq' stand for in the chemical equation?

• Aquifer

• Aqua

• Aquatic

• Aqueous

What is the significance of the small amount of iron(II) phosphate that dissolves?

• It indicates complete solubility

• It demonstrates a minor dissolution

• It shows partial reactivity

• It proves the compound is a gas

Where is water sometimes placed in the chemical equation?

• Below the equation

• On top of the arrow

• In the products

• In the reactants

What is the overall conclusion about iron(II) phosphate in water?

• It is completely insoluble

• It is highly soluble

• It is mostly insoluble with a tiny amount dissolving

• It reacts to form a new compound