Question: what apparatus would you use to measure out the sodium hydroxide solution?
Answer: Use the pipette and pipette filler to add 25 cm 3 of alkali to a clean conical flask. Add a few drops of indicator and put the conical flask on a white tile. Fill the burette with acid and note the starting volume. Slowly add the acid from the burette to the alkali in the conical flask, swirling to mix.