Which Ka for H3PO4 is represented by the expression:?
[H3O+] [PO43-]
—————
[HPO42-]:
Ka3 |
|
Ka1 |
|
Ka2 |
|
Kb3 |
We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
Which Ka for H3PO4 is represented by the expression:? [H3O+] [PO43-] ————— [HPO42-]: Ka3 Ka1 Ka2...
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]
Phosphoric acid has a formula of H3PO4, and has a Ka1 of 7.5×10–3 , Ka2 of 6.2×10–8 , and Ka3 of 4.2×10–13 at 25 ºC. What is the equilibrium constant for the following reaction at 25°C? HPO42–(aq) + H2O(l) ⇄ H2PO4–(aq) + OH–(aq) A.) 4.2×10–13 B.) 1.3×10–12 C.) 2.4×10–2 D.) 7.5×10–3 E.) 1.6×10–7
My answer(s) were marked as incorrect. My textbook's Ka values for H3PO4 are: Ka1=7.11x10^-3, Ka2=6.32x10^-8, and Ka3=4.5x10^-13 What is the pH of the buffer formed by mixing 83.0 mL of 0.280 M Na H2PO4 with (This problem requires values in your textbook's specific appendices, which you can access through the OWLv2 MindTap Reader. You should not use the OWLv2 References' Tables to answer this question as the values will not match.) a. 44.0 mL of 0.470 M HCI? pH =...
1 A) Which of the following pairs of solutions when mixed will form a buffer solution? Group of answer choices H2SO4 and Ca(OH)2 NH3 and NH4Br NaNO3 and HNO3 KOH and KNO2 B)Phosphoric acid, H3PO4, is a triprotic acid with the following Ka values: Ka1 = 7.5 x 10-3; Ka2 = 6.2 x 10-8; Ka3 = 3.6 x 10-13 In a solution of 0.15 M H3PO4, which species will be most abundant? H3O+ H3PO4 HPO42- H2PO4-
15 5 points Which ion below is the conjugate base of HPO42-? o H2P04 O PO43- O HPO42- O H3PO4 H3O+ Previous
Which acid is the strongest? H3PO4 OH2PO4 HPO42- PO43- H2O
Consider a triprotic acid, H3A, with the following Ka’s: Ka1 = 2.4 x 10-3, Ka2 = 3.5 x 10-7, Ka3 = 1.6 x 10-11. What is the Kb3 value?
Phosphoric acid, H3PO4, is a triprotic acid with the following acid dissociation constants: Ka1 = 7.5 × 10-3 Ka2 = 6.2 × 10-8 Ka3 = 4.2 × 10-13 Which of the following combinations would be best for preparing a pH 7 buffer? a. H3PO4 and NaH2PO4 b. H3PO4 and HCl c. Na2HPO4 and Na3PO4 d. NaH2PO4 and Na2HPO4 e. H3PO4 and Na3PO4
Which of the following is a conjugate acid/ base pair? A) H3PO4, PO43- B) H2PO4 , PO43- C) HPO42-, PO43- D) H3PO4, HPO42-
H3PO4 is a triprotic weak acid. What is the balanced equilibrium defined as Ka2 of H3PO4? O H2PO4 (aq) + H2O(l) =H2O*(aq) +HPO42- (aq) HPO42- (aq) + H2O(1) = OH(aq) + H2PO4 (aq) O HPO42-(aq) + H2O(1) =H20*(aq) + PO43-(aq) O H2PO4 (aq) + H2O(l) = OH" (aq) + H3PO4(aq) O H3PO.(aq) + H2O(1) =H30*(aq) + H2PO4 (aq)