Chemical Reactions in Aqueous Solutions

The video tutorial explains how to write the equation for lithium nitrate (LiNO3) reacting with water (H2O). It describes the nature of ionic compounds, focusing on the charges of lithium and nitrate ions. The process of dissociation in water is detailed, showing how LiNO3 dissolves to form Li+ and NO3- ions, which are aqueous. The video concludes with a summary of the equation and the significance of the aqueous state.

What type of elements are involved in the reaction between lithium nitrate and water?

• A metal and nonmetals

• Two nonmetals

• A metal and a metalloid

• Two metals

What charge does lithium have in the periodic table?

• Zero

• Plus one

• Minus one

• Plus two

What is the charge of the nitrate ion (NO3)?

• Minus two

• Plus two

• Minus one

• Plus one

What happens to lithium nitrate when it is added to water?

• It reacts to form a gas

• It dissolves and dissociates into ions

• It remains unchanged

• It forms a solid precipitate

What does the term 'aqueous' indicate in a chemical equation?

• The substance is in solid form

• The substance is dissolved in water

• The substance is in liquid form

• The substance is in gaseous form

Why is it unnecessary to write H2O on the product side of the equation when using 'aq'?

• Because water evaporates

• Because water is a reactant

• Because water is not involved in the reaction

• Because 'aq' indicates the presence of water

What does the final equation for the reaction between LiNO3 and H2O represent?

• The dissolution of LiNO3 in water

• The formation of a new compound

• The evaporation of water

• The precipitation of LiNO3