Calcium Hydroxide and Its Properties

The video tutorial explains the chemical formula for lime water, which is the common name for aqueous calcium hydroxide. It details the components of the formula, including calcium and hydroxide ions, and describes how calcium hydroxide dissociates in water to form ions. The tutorial also discusses the solubility of calcium hydroxide, noting that it is not very soluble but is considered a strong base. The video concludes with a summary of how the dissolved portion forms lime water.

What is the chemical formula for lime water?

• CaCO3

• CaO

• CaCl2

• Ca(OH)2

What is the common name for aqueous calcium hydroxide?

• Quicklime

• Lime water

• Chalk

• Slaked lime

Which ion is formed when calcium hydroxide dissolves in water?

• Ca2+

• Cl-

• OH-

• H+

What does the notation 'aq' signify in a chemical formula?

• The substance is dissolved in water

• The substance is a gas

• The substance is a solid

• The substance is a liquid

Why is calcium hydroxide considered a strong base despite its low solubility?

• It reacts with acids

• It forms a precipitate

• It completely dissociates in water

• It has a high pH

What happens to calcium hydroxide when it is added to water?

• It forms a gas

• It dissolves completely

• Only a small amount dissolves

• It becomes a solid