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A diprotic acid (H, A) has pK, values of 3.16 (pK1) and 6.32 (pK2). Which of the equalities is true when the pH is 3.16? Which of the equalities is true when the pH is 6.32? [HA-] = [A- O [HA] = [A2-) O HA= [H, A] = [HA) [H, A) = [HA) [HA") = [A2-) O [HA) = [A?-) What is the predominant species of H, A at pH 1.90? What is the predominant species of H, A at pH 5.28? HA ОА2- HA HA HA O A2- What is the predominant species of H, A at pH 7.90?

What is the prеdominant species of H, Aat pH 7.90? ОНА- ОА2- ОН, А