Neutralisation Reactions

• What types of bases are discussed in the video?

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

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

  Sodium chloride and water
• How do you balance the reaction of hydrochloric acid with sodium oxide?

  Combine sodium and chloride ions correctly
• What is produced when sulfuric acid reacts with potassium hydroxide?

  Potassium sulfate and water
• What is the charge of sulfate ions?

  Two minus
• What happens when acids react with metal carbonates?

  They form salt, water, and carbon dioxide
• How do you form calcium nitrate from nitric acid and calcium carbonate?

  Combine calcium ions with nitrate ions
• What is the first step to make a soluble salt from an insoluble base?

  Place dilute acid in a beaker
• What should you do after adding insoluble base to the acid?

  Heat the mixture gently
• What indicates that the base is in excess during the reaction?

  Some 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
• Why should you avoid using a Bunsen burner to heat the solution too much?

  To prevent damaging the salt
• What should you do when crystals start forming in the solution?

  Stop heating and let it cool
• How do 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
  • Negative ion from acid combines with positive ion from base
  • Always check the salt formula and balance the equation
• What are the steps to make a soluble salt from an insoluble base?

  1. Place dilute acid in a beaker
  2. Gently heat the acid
  3. Add insoluble base gradually
  4. Filter out excess base
  5. Evaporate water to form crystals
  6. Dry the crystals