Acid-Base Reactions and Properties

This video explains the reaction between nitric acid (HNO3) and water (H2O). Nitric acid is a strong acid that dissociates completely in water, forming H+ and NO3- ions. The presence of H+ in water leads to the formation of the hydronium ion (H3O+), which is responsible for the solution's acidity. The video emphasizes the importance of adding acid to water to prevent dangerous reactions. Safety precautions are highlighted to avoid accidents when handling nitric acid.

What makes nitric acid a strong acid?

• It partially dissociates in water.

• It completely dissociates in water.

• It does not dissociate in water.

• It forms a weak base in water.

What ions are formed when nitric acid dissociates in water?

• H+ and NO3-

• H+ and OH-

• H2 and O2

• H2O and NO3-

What does 'aq' signify when written after a chemical formula?

• The substance is solid.

• The substance is gaseous.

• The substance is in a liquid state.

• The substance is dissolved in water.

What is the hydronium ion and why is it important?

• H2, it is a gas.

• OH-, it indicates basicity in water.

• H3O+, it indicates acidity in water.

• H2O, it is a neutral molecule.

Why should acid be added to water and not the other way around?

• To prevent the solution from becoming too cold.

• To ensure the acid remains concentrated.

• To avoid a violent reaction that can cause splashing.

• To make the solution more acidic.

What could happen if water is added to concentrated acid?

• The solution will become less acidic.

• The solution will cool down.

• The solution might boil and splash.

• The solution will become solid.

What is the potential danger of getting nitric acid on your skin?

• It can cause serious burns.

• It cools the skin.

• It is harmless.

• It causes mild irritation.