1. Prepare a mixture of aspirin, trisodium citrate and distilled water in a 250mL conical flask
2. Take a 10mL sample and titrate with N/20 NaOH using phenol red indicator to determine the initial aspirin concentration (X)
3. Label 3 flasks with the experimental temperatures 40, 55, 70°C and place 80mL of the mixture in each
4. Note the time and place the flasks in the water baths
5. Take 10mL samples from each flask every 15 minutes for 1 hour and titrate with N/20 NaOH to determine the end point (Y1, Y2, Y3, Y4)