Obtain 70 to 80 mL of potassium hydroxide solution in a clean beaker. / Obtain 70 to 80 mL of hydroiodic acid solution in a clean beaker./ Set up the burette to contain the hydroiodic acid solution./ Record the initial burette reading. / Pipette a 10.00 mL sample of hydroiodic acid into a volumetric ask. Add 2-3 drops of bromothymol blue indicator./ Slowly add the titrant to the sample solution until a subtle colour change has occurred. Swirl vigorously.
Record the final burette reading / Dispose contents of the ask safely and clean the ask./ Repeat steps 4 to 7 until you obtain three consecutive trials within 0.5 to 1.0 mL of each other.
titration procedure is provided what are the 3errors that occur in the procedure.