Halogen displacement reaction

• What are halogens known for in terms of reactivity?

  They are pretty competitive in reactivity.
• What happens when more reactive halogens are present?

  They push less reactive ones out of compounds.
• What is the behavior of halogens in displacement reactions?

  They displace less reactive elements from compounds.
• What type of reactions are halogen displacement reactions classified as?

  They are classified as redox reactions.
• What do halogens gain during displacement reactions?

  They gain electrons during reduction.
• What do halides lose during displacement reactions?

  They lose electrons during oxidation.
• If chlorine is more reactive than bromine, what will happen when they react?

  Chlorine will displace bromine from bromide.
• How does the reactivity of chlorine compare to bromine?

  Chlorine is more reactive than bromine.
• What happens when chlorine is added to a potassium bromide solution?

  Chlorine displaces bromine from the solution.
• What is produced when chlorine displaces bromine from potassium bromide?

  Chlorine produces potassium chloride and bromine.
• What is the chemical equation for chlorine reacting with potassium bromide?

  $Cl_2 +$$2KBr \rightarrow Br_2 +$$2KCl$
• What is the chemical equation for chlorine reacting with iodide ions?

  $Cl_2 +$$2I^- \rightarrow I_2 +$$2Cl^-$
• What happens to the solution when bromide ions are oxidized?

  The solution turns orange due to bromine.
• What indicates that a reaction has occurred in a halogen displacement reaction?

  A color change indicates the reaction has occurred.
• What are the steps to demonstrate halogen displacement reactions?

  1. Measure a small amount of halide salt solution in a test tube.
  2. Add a few drops of halogen solution to it.
  3. Shake the tube gently.
  4. Observe any color change indicating a reaction.
• What should you expect when mixing different halide salts with halogens?

  • Different combinations will show varying reactivity.
  • Color changes will indicate displacement reactions.
  • The more reactive halogen will displace the less reactive one.
• What does the table below show regarding halogen displacement reactions?

  • It shows expected outcomes when mixing halogens and halide salts.
  • It indicates which halogen displaces another based on reactivity.
  • It helps predict color changes in solutions.
• What are the three salts mentioned in the study material?

  Potassium chloride, potassium bromide, potassium iodide
• What is the colorless solution of potassium chloride?

  It is a solution of potassium chloride
• What is the colorless solution of potassium bromide?

  It is a solution of potassium bromide
• What is the colorless solution of potassium iodide?

  It is a solution of potassium iodide
• What happens when chlorine is added to water?

  • Chlorine forms a colorless solution
  • No reaction occurs
• What happens when bromine is added to water?

  • Bromine forms an orange solution
  • No reaction occurs
• What happens when iodine is added to water?

  • Iodine forms a brown solution
  • No reaction occurs
• What does bromine displace from salts solutions?

  It displaces iodine from salts solutions
• What does iodine displace from salts solutions?

  It displaces bromine from salts solutions
• What trend is shown regarding the reactivity of halogens?

  Halogens get less reactive down the group
• How can you predict the reactivity of halogens?

  By observing their position in the group
• What happens when a halogen is mixed with a halide salt?

  • Reactivity determines displacement
  • Less reactive halogens do not displace
• What is the outcome when a student adds a few drops of halogen solution to potassium iodide solution?

  The solution will change color
• What should students do to help identify halogens?

  They should observe color changes