Which of the following equilibria represents the second ionization step of H3PO4?
Group of answer choices
HPO42-(aq) + H2O(aq) PO43-(aq) + H3O+(aq)
H3PO4(aq) + 3H2O(l) PO43-(aq) + 3H3O+(aq)
H2PO4-(aq) + H2O(l) HPO42-(aq) + H3O+(aq)
H3PO4(aq) + 2H2O(l) HPO42-(aq) + 2H3O+(aq)
H3PO4(aq) + H2O(l) H2PO4-(aq) + H3O+(aq)
H2PO4-(aq) + H2O(l) = H(PO4)2(aq) + H3O+(aq)
Just keep removing one hydrogen from the phosphoric acid we will get 2 ionisation step for phosphoric acid.
Which of the following equilibria represents the second ionization step of H3PO4? Group of answer choices...
Which of the following is a monoprotic acid? Group of answer choices Na3PO4 H3PO4 H2PO4– HPO42– PO43–
Which equilibrium constant expression represents the first ionization of H3PO4 in water? A) [H+][H2PO4-]/[H3PO4] B) [H+][PO43-]/[HPO42-] C) [H+][PO42-]/[H2PO4-] D) [H+][H3PO43-]/[H3PO4] E) [H+][H3PO4]/[H3PO4]
Which of the following is a conjugate acid/ base pair? A) H3PO4, PO43- B) H2PO4 , PO43- C) HPO42-, PO43- D) H3PO4, HPO42-
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 species is present at the lowest concentration in an aqueous solution of H3PO4? a) H2PO4- b) H3O+ c) H3PO4 d)| HPO42- e) PO43-
You are instructed to create 400. mL of a 0.40 M phosphate buffer with a pH of 6.4. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4 available. (Enter all numerical answers to three significant figures.) H3PO4(s) + H2O(l) H3O+(aq) + H2PO4−(aq) Ka1 = 6.9 ✕ 10−3 H2PO4−(aq) + H2O(l) H3O+(aq) + HPO42−(aq) Ka2 = 6.2 ✕ 10−8 HPO42−(aq) + H2O(l) H3O+(aq) + PO43−(aq) Ka3 = 4.8 ✕ 10−13 Which of the available chemicals will you use...
6. Which of the following ions will be in the smallest concentration in a solution of H3PO4? H+ H2PO4- HPO42- PO43- 12. Which species is amphiprotic? Cl-(aq) PO43-(aq) CO32-(aq) HSO3-(aq)
18. Which of the following is the conjugate base of the dihydrogenphosphate ion, H2PO4-? A) H3PO4 B) NaH2PO4 C) OH- D) HPO42- E) PO43-
Write the equations that represent the first and second ionization steps for hydrotelluric acid (H2Te) in water. (Use H3O+ instead of H+.) First ionization step: (aq)(s)(l)(g) + H2O(l) (aq)(s)(l)(g) + (aq)(s)(l)(g) Second ionization step: (aq)(s)(l)(g) + H2O(l) (aq)(s)(l)(g) + (aq)(s)(l)(g)
What is the Bronsted Acid of H2PO4- + OH-àHPO42- + H2O? Group of answer choices H2PO4- OH- HPO42- H2O