Lithium Hydroxide Properties and Reactions

The video tutorial explains the reaction between lithium hydroxide (LiOH) and water (H2O). It discusses the solubility of LiOH in water, using a solubility table to confirm its solubility. The tutorial then demonstrates how to write the dissociation equation for LiOH in water, indicating the formation of lithium and hydroxide ions. Finally, it concludes with a note on how evaporation would result in solid LiOH reforming.

What type of ion is hydroxide?

• A cation

• A metal ion

• A polyatomic ion

• A single atom ion

What is the nature of the bond in lithium hydroxide?

• Covalent

• Metallic

• Hydrogen

• Ionic

How do we confirm the solubility of lithium hydroxide in water?

• By using a pH scale

• By using a solubility table

• By observing its color change

• By measuring its temperature

What ions are formed when lithium hydroxide dissociates in water?

• Li+ and OH-

• Na+ and Cl-

• Li- and O2-

• H+ and OH-

What does the 'aq' notation indicate in a chemical equation?

• The substance is a solid

• The substance is a liquid

• The substance is dissolved in water

• The substance is a gas

Why don't we need to add water on the right side of the equation when 'aq' is used?

• Because 'aq' already indicates the presence of water

• Because water is not involved in the reaction

• Because water is a product

• Because water is a reactant

What happens to lithium hydroxide if the water evaporates?

• It becomes a liquid

• It reforms as a solid

• It forms a gas

• It remains dissolved

What is the result of leaving the solution out for a while?

• The solution becomes acidic

• The solution changes color

• The water evaporates and lithium hydroxide solidifies

• The solution becomes more concentrated

Who is the presenter of the video?

• Dr. A

• Dr. D

• Dr. B

• Dr. C