$9\mathrm{.}50,9\mathrm{.}00,8\mathrm{.}50\mathrm{.}8\mathrm{.}00,7\mathrm{.}50,7\mathrm{.}00,6\mathrm{.}00,5\mathrm{.}00,4\mathrm{.}00,3\mathrm{.}00\mathrm{.}2\mathrm{.}00,1\mathrm{.}00$ and $0\mathrm{.}00mL$ of the $L$ solution, see Table $3.$ The flasks are filled to the mark with $0\mathrm{.}1$MKOH$(aq).$ Before absorbance readings are obtained $30$ minutes are allowed, with occasional swirling, for the reaction to complete.experimental abs $=0\mathrm{.}6$ theoretical abs$=0\mathrm{.}8$

$b=1$ at $690$ nm