What are the chemical equilibrium equations and mass action equations for this question: If you dissolve $0\mathrm{.}15$ moles fumaric acid into water, adjusted to pH $7\mathrm{.}00$ and brought the final mix to $1\mathrm{.}0$ liter total volume, what are the equilibrium values of fumaric acid, fumarate$-1,$ and fumarate$-2$ in the solution? pK$1=3\mathrm{.}03,$ pK$2=4\mathrm{.}44.$ Do not use Henderson$-$Hasselbach equation