1. To remove organic matter is one of the most critical tasks for water treatment. Low-molecular-weight (LMW) organic acid is an important component of organic matter in the waste water. As a representative LMW organic acid, Citric acid, C6H8O7 abbreviated as H3Cit, is a triprotic acid. With pkal=3.13,pKa2=4.72,pKa3=6.33. Consider a solution made by adding lemon juice to water until pH of the solution is 2.2 . Assuming all the acidity is from dissociation of citric acid, find the total concentration of citrate species, TOTCit, and the concentration of HCit2. Citric acid