Current Attempt in Progress

Calculate the $pH$ of a $0\mathrm{.}046M$ solution of sodium ascorbate, $N{a}_2{C}_6{H}_6{O}_6.$ For ascorbic acid, $H_2{C}_6{H}_6{O}_6,K_{a1}=7\mathrm{.}9{10}^{-5}$ and $K_{a2}=1\mathrm{.}6$

${10}^{-12}.$

$pH=$