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Question 38 (1 point) Which of the following is the conjugate acid of HPO42- H3PO4 H2P04...
Which of the following is not a conjugate acid-base pair? A H20 and H30+ B. H3PO4 and H2PO4 C. H3PO4 and HPO42- D. HPO42- and PO43 E. H2PO4 and HPO42-
Which of the following is a conjugate acid/ base pair? A) H3PO4, PO43- B) H2PO4 , PO43- C) HPO42-, PO43- D) H3PO4, HPO42-
15 5 points Which ion below is the conjugate base of HPO42-? o H2P04 O PO43- O HPO42- O H3PO4 H3O+ Previous
Which of the following is a monoprotic acid? Group of answer choices Na3PO4 H3PO4 H2PO4– HPO42– PO43–
18. Which of the following is the conjugate base of the dihydrogenphosphate ion, H2PO4-? A) H3PO4 B) NaH2PO4 C) OH- D) HPO42- E) PO43-
Which acid is the strongest? H3PO4 OH2PO4 HPO42- PO43- H2O
Question 23 12 points) Which species is the conjugate acid of HPO42-? O A OH OB) H2PO4- OC) PO43- OD H₂O O E) P₂O
Which type of phosphate should be used as the conjugate acid to generate a buffer with a pH of 7.0? a. H3PO4 b. H2PO4- c. HPO42- d. PO43-
1. Identify the acid, base, conjugate acid and conjugate base in the following reaction: HPO42+ H20 OH H2PO4 2. Calculate the following a) pH of a [H30*] = 2.76 x 104 M b) pH of a [OH] - 8.5 x 10-6 M c) [H30*] and [OH] for a soln pH 5.73 3. Show how an incoming acid [H30*] is neutralized by the buffer system HCO3 /CO32 system. You should also be able to show the neutralization of incoming base [OH']...
Phosphoric acid is a triprotic acid in water, ionizing in the following sequential steps: H3PO4+H204H2PO4 +H30+ K. = 7.11 x 10-3 H2PO4 + H20 5 HPO42- +H30+ K. -6.32 x 10-8 HPO42- + H20 PO43- +H30+ K. - 4.5 x 10-13 What is the pH of a 0.20 MH3PO4 solution? 04.09 5.37 2.15 2.84 1.46