Chemistry/Acids and Bases Prep

Lab Preparation  for  “ACIDS  AND  BASES”

Equipment that must be available

 * 24 plastic wells plates (containing 12 large wells each)
 * 1 vial of neutral litmus paper
 * 12 pH colour cards

Solutions
6 small dropper bottles of each of:
 * bromthymol blue indicator, labeled “Bromthymol blue”
 * methyl red indicator, labeled “Methyl red”
 * phenolphthalein indicator, labeled “Phenolphthalein”
 * universal indicator, labeled “universal indicator”

6 – 100 mL bottles of each of:
 * HCl (0.1 M), labeled “Highly Acidic”
 * NaOH (0.1 M), labeled “Highly Basic”
 * pH 7 buffer, labeled “NEUTRAL”
 * pH 8 buffer, labeled “A”
 * pH 5 buffer, labeled “B”
 * pH 7 buffer, labeled “C”
 * pH 6 buffer, labeled “D”
 * pH 10 buffer, labeled “E”
 * pH 4 buffer, labeled “F”
 * pH 9 buffer, labeled “G”

Check that the following results are obtained when one drop of each indicator (or small piece of litmus) is added to one pipetful (using smallest plastic pipet available) of each liquid to be tested. If these results do not occur, remake the buffer or check its pH.