Experiment 6: Determining The Actuvation Energy Of The Reactions Between Bromide And Bromate (v) Ions

Question 1

What would happen if you omitted the phenol from the reaction mixture

Answer 1

Phenol slows down the rate of the reaction

• if phenol is omitted = rxn occurs too quickly
• inaccurate data collection

Question 2

What function does methyl red play in the experiment

Answer 2

• changes colour when all the phenol is used up
• allows us to determine the amount of bromine formed
• acts as a dye

Question 3

Based on your results, is it advisable to measure the reaction rate at temperatures above 60 degrees Celsius?

Answer 3

No

• rxn occurs rapidly at high temperatures
• difficult to time accurately

Question 4

Based on your results, how was the reaction affected by temperature?

Answer 4

• as temperature increases, reaction time decreases
  = rxn rate increases
• as temp increase, more molecules gain minimum energy faster = can react faster
• more effective collisions in the right orientation can occur