Neutralisation Reactions

• What types of bases are discussed in the video?

  Metal oxides, metal hydroxides, metal carbonates
• What do reactions between acids and bases produce?

  Salt and water
• What is formed when hydrochloric acid reacts with sodium oxide?

  Sodium chloride and water
• What salt is formed when sulfuric acid reacts with potassium hydroxide?

  Potassium sulfate
• What additional product is formed when acids react with metal carbonates?

  Carbon dioxide
• What is the result of combining nitric acid with calcium carbonate?

  Calcium nitrate, water, and carbon dioxide
• What is the charge of the nitrate ion?

  1 minus
• What must be done to make soluble salts from insoluble bases?

  React acid with insoluble base
• What is the first step in making a soluble salt?

  Place dilute acid in a beaker
• Why do you add insoluble base gradually to the acid?

  To observe when it is in excess
• What indicates that the acid has been neutralized?

  Excess base no longer disappears
• What is the purpose of filtering the mixture after the reaction?

  To remove excess insoluble base
• How do you obtain pure solid crystals of copper chloride?

  Evaporate water from the solution
• What should you avoid when heating the solution to form crystals?

  Using a Bunsen burner directly
• What happens when the solution cools after evaporation?

  More crystals form
• How can you dry the crystals after filtering?

  By dabbing with filter paper
• What is the general pattern for neutralization reactions between acids and bases?

  • Acid reacts with base
  • Forms salt and water
  • Combine negative ion from acid with positive ion from base
• What are the steps to make soluble salts from insoluble bases?

  1. Place dilute acid in a beaker
  2. Heat gently
  3. Add insoluble base gradually
  4. Filter out excess base
  5. Evaporate water to form crystals
  6. Dry the crystals
• What are the products of acid reactions with metal oxides, hydroxides, and carbonates?

  • Metal oxides/hydroxides: salt and water
  • Metal carbonates: salt, water, and carbon dioxide