Ascorbic acid, C$6$H$806$ is a weak acid that has a conjugate base ofC$6$H$706$ and its initial

concentration is $0\mathrm{.}5$ M$.$

The acid dissociation value for ascobic acid $($Ka$)$ is $7\mathrm{.}69$ x $105$

i$)$ Write the Ka expression for ascorbic acid dissociation.

ii$)$ Calculate the concentration for each species.