Sodium hydroxide (NaOH) is the active ingredient in drain cleaners.
In an experiment to determine the concentration of sodium hydroxide
in a drain cleaner sample, 25 cm3
of the sample was diluted with
water to 250 cm3
. 10 cm3
of the diluted sample required 16.3 cm3
0.14 M sulphuric acid (H2SO4) for complete neutralization.
Given: 2NaOH(aq) + H2SO4(aq) → Na2SO4(aq) + 2H2O(l)