6. Which of the following ions will be in the smallest concentration in a solution of H3PO4?
H+ |
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H2PO4- |
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HPO42- |
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PO43- |
12. Which species is amphiprotic?
Cl-(aq) |
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PO43-(aq) |
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CO32-(aq) |
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HSO3-(aq) |
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6. Which of the following ions will be in the smallest concentration in a solution of...
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-
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)
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-
Select each side of the mass balance equation for an Fe 3 ( PO 4 ) 2 Fe3(PO4)2 solution where the species in solution are Fe 2+ Fe2+ , PO 3− 4 PO43− , HPO 2− 4 HPO42− , H 2 PO − 4 H2PO4− , H 3 PO 4 H3PO4 , and FeOH + FeOH+ . Identify the side of the mass balance equation that contains the iron-containing species. 3([ Fe 2+ ]+[ FeOH + ]) 3([Fe2+]+[FeOH+]) [ Fe...
Use the given information to answer the following questions with corresponding answers. (a) Consider the following dissociation reactions of glycine that can have three different forms in solution: H2G+, HG, or G-. : H2G+ ⟺ HG + H+ Ka1 = 4.6 × 10-3 HG ⟺ G- + H+ Ka2 = 2.5 × 10-10 Determine the dissociation constant for G- + H2O ⇔ HG + OH-. Group of answer choices 4.0 ×× 10-9 4.0 ×× 10-5 2.2 ×× 10-12 3.5 ×× 10-6 2.9 ××...
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]
3) Calculate the pH of a solution by mixing 50.0 mL of 0.200 M Na2HPO4 with 20.0 mL 0.0400 M NaH2PO4. (Hint: Buffer solution. Use Henderson-Hasselbalch equation) H3PO4 5 H+ + H2PO4 pkı = 2.1 H2PO4 5 H+ + HPO42- pK2 = 7.2 HPO42- 5 H+ PO43- pK3 = 12.3
please answer both questions QUESTION 6 What is the concentration of silver ion in a saturated solution of silver carbonate containing 0.0044 M Na2CO3? For Ag2CO3, Ksp - 8.6 x 10-12 26.0 x 10-4 M b.8.0 x 10.9 M ©8.0 x 10-4 M 2.0 x 10.9 M 44x10-5M QUESTION 7 What is the net ionic equation for the reaction of Ca3(PO4)2 with a strong acid? *3 Ca2+ (aq) + 2 PO43-(aq) + 6 Ht(aq) → 2 H3PO4(aq) + 3 Ca2+(aq)...
Which of the following is a monoprotic acid? Group of answer choices Na3PO4 H3PO4 H2PO4– HPO42– PO43–