Use Appendix C to calculate[ H₂C₃H₂O₄ ] , [ HC₃H₂O₄⁻ ] , , [ C₃H₂O₄²⁻ ] , [ H₃O⁺ ] , pH , [ OH⁻ ] and pOH in a 0.200 M solution of the diprotic acid malonic acid.