Ammonium Ion and Solubility Concepts

The video tutorial explores the solubility of ammonium fluoride (NH4F) in water. It begins by introducing NH4F and its components, ammonium and fluoride ions. The instructor refers to solubility rules, highlighting that compounds with the ammonium ion are generally soluble. A solubility table is used to confirm NH4F's solubility, showing that it dissociates into NH4+ and F- ions in water. The video concludes by affirming that NH4F is indeed soluble in water.

What is the general rule for the solubility of compounds containing the ammonium ion?

• They are generally insoluble.

• They are generally soluble.

• They react with water to form a precipitate.

• They are only soluble in organic solvents.

What does the solubility table indicate about the solubility of NH4F?

• NH4F is soluble in water.

• NH4F forms a gas when dissolved in water.

• NH4F reacts with water to form a solid.

• NH4F is insoluble in water.

Which ions are formed when NH4F dissolves in water?

• Ammonium ion and chloride ion

• Ammonium ion and fluoride ion

• Sodium ion and fluoride ion

• Hydrogen ion and fluoride ion

What is the charge on the ammonium ion?

• Variable

• Neutral

• Positive

• Negative

What is the chemical formula for ammonium fluoride?

• NH4OH

• NH4Cl

• NH4F

• NH3F