Consider the triprotic acid arsenic acid (H3AsO4). It has three Ka values: 10-7, 10-2, and 10-12. Use the below chemical equations to correctly identify the values of Ka2 and Ka3 Ka1: H3AsO4 (aq) + H2O (l) ⇌ H2AsO4– (aq) + H3O+ (aq) Ka2: H2AsO4– (aq) + H2O (l) ⇌ HAsO42– (aq) + H3O+ (aq) Ka3: HAsO42– (aq) + H2O (l) ⇌ AsO43– (aq) + H3O+ (aq) Hint: Do you think it would be harder or easier to remove each subsequent proton? If you are unsure, think about the charge on the reactant in each equation. This charged species is what you are trying to remove a proton from in the second equation.