Solubility and Properties of Ammonium Iodide

The video tutorial explores the solubility of ammonium iodide (NH4I) in water. It begins by discussing the solubility rules, highlighting that compounds with the ammonium ion are generally soluble. The video then demonstrates how to use a solubility table to confirm this prediction, showing that NH4I dissociates into NH4+ and I- ions in water. The tutorial concludes by summarizing the findings and confirming the solubility of ammonium iodide in water.

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

• They are soluble only in acidic solutions.

• They are soluble only in basic solutions.

• They are generally insoluble.

• They are generally soluble.

What is the chemical formula for the ammonium ion?

• NH5+

• NH3+

• NH4+

• NH2-

What does the solubility table indicate about ammonium iodide?

• It is insoluble in cold water.

• It is soluble only in hot water.

• It is soluble in water.

• It is insoluble in water.

What is the significance of the 's' in the solubility table for ammonium iodide?

• It indicates the compound is saturated.

• It indicates the compound is stable.

• It indicates the compound is soluble.

• It indicates the compound is solid.

What ions are formed when ammonium iodide dissociates in water?

• NH4+ and I-

• NH3 and I2

• NH3+ and I-

• NH4- and I+

What happens to ammonium iodide when it is placed in water?

• It forms a precipitate.

• It remains undissolved.

• It reacts to form a new compound.

• It dissociates into ions.