1 A triprotic acid (H3A) has p?a values of 3.653.65 (p?a1), 6.396.39 (p?a2), and 9.139.13 (p?a3). Which of the equalities is true when the pH is 7.76?[H₂A] = [H₂A¯]○ [HA²-] = [A³-]O [H₂A] = [HA²-][H₂A] = [HA²-]O [H₂A] = [A³-]What is the predominant species of H₂A at pH 4.56?H₂AH₂A-A³-HA²-What is the predominant species of H₂A at pH 10.77?H₂AA³-HA²-H₂A™What is the predominant species of H₂A at pH 2.19?O A³-O HA²-O H₂AH₂AWhat is the predominant species of H₂A at pH 7.48?H₂A-HA²-O A³-O H₂A

Answer: This question is based on the understanding of dissociation of polyprotic acid where as the…

Which of the equalities is true when the pH is 7.76? O [H₂A] = [H₂A¯] [HA²-] = [A³-] [H₂A¯] = [HA²-] [H₂A] = [HA²-] O [H₂A] = [A³-] What is the predominant species of H₂A at pH 4.56? O H₂A O A³- HA²- What is the predominant species of H₂A at pH 10.77? H₂A O A³- O HA²- ● H₂A™ H₂A- What is the predominant species of H₂A at pH 2.19? A³- HA²- O H₂A™ O H₂A What is the predominant species of H₂A at pH 7.48? O H₂A™ HA²- O A³- O H₂A

Which of the equalities is true when the pH is 7.76? O [H₂A] = [H₂A¯] [HA²-] = [A³-] [H₂A¯] = [HA²-] [H₂A] = [HA²-] O [H₂A] = [A³-] What is the predominant species of H₂A at pH 4.56? O H₂A O A³- HA²- What is the predominant species of H₂A at pH 10.77? H₂A O A³- O HA²- ● H₂A™ H₂A- What is the predominant species of H₂A at pH 2.19? A³- HA²- O H₂A™ O H₂A What is the predominant species of H₂A at pH 7.48? O H₂A™ HA²- O A³- O H₂A

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter15: Complex Acid/base Systems

Section: Chapter Questions

Problem 15.16QAP

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