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Which K, for H2PO4 is represented by the expression:? [H30') [PO 31 [HPO 21 Каз 9...
24. Which of the following chemical equations corresponds to Kay of phosphoric acid? a. HPO (aq) + H2O(l) = PO (aq) + H2O (aq) b. PO2 (aq) + H2O(1) HPO2 (aq) + OH(aq) c. H,PO(aq) + H2000) H2PO4 (aq) + H,O'(aq) d. H3PO4(aq) + 2 H2O(l) =HPO2 (aq) + 2 H20 (aq) e. H2PO4 (aq) + H2O(1) HPO2 (aq) + H:0 (aq) 25. Which of the following chemical equations corresponds to K for SO 22
Which Ka for H3PO4 is represented by the expression:? [H3O+] [PO43-] ————— [HPO42-]: Ka3 Ka1 Ka2 Kb3
h(k) = k mod 701 = 9 and 0 k 2000 , find two keys for which h(k) = 9 If k2= k1 +1 what can you say about h(k1) and h(k2) We were unable to transcribe this imageWe were unable to transcribe this image
D Question 21 4 pts Write the expression for K for the reaction below. Mg3(PO4)2(s) = 3 Mg2+(aq) + 2 PO ?"(aq) A) K - [Mg][PO, 1 B) K = [3 Mg2+ ][2 PO ] C) K = [Mg][PO] D) K = [Mg;PO] [Mg][POT OD ОА Ос OB
Vrite a balanced chemical equation which corresponds to the following equilibrium constant expression. [NO] H₂O K = (HNO2) Select one: a. HNO3(aq) - H20(8)=NO:"(aq) - H30"(aq) b. NO:- (aq) - H30"(aq) = HNO2(aq) - H.0() C. NO:- (aq) - H30 (aq) = HNO3(aq) d. HNO3(aq) =NO: (aq) - H:0"(aq) e. H(aq) - OH (aq) =H-08) die good die Ware about our
Q 21: Which of the following is the strongest acid? A) HF (K, for HF is 7.2 x 10-4) B) HCN (K for HCN is 4.9 x 10-10) C) HCNO (K for HCNO is 2 x 10-4) D) H3B03 (K, for H3B03 is 5.4 x 10-10) OA B с D Question 22 (2.439024 points) We were unable to transcribe this imageQuestion 23 (2.439024 points) Q 23: Which of the following is the weakest acid? A) HF (K, for HF is...
Q(17) Which species is amphiprotic? A) H3PO4 C) PO43- D) None of these B) H2PO4 Q(18) Ni(CO)4(g)Nis)+ 4 CO(g)Adding nickel (solid) to this reaction will cause the equilibrium to C) remain unchanged E) it depends on the amount added B) Shift toward the reactants A) Shift toward the products D) increase the temperature Q(19) CO2 H2 CO + H20 Adding a catalyst to this reaction will cause the [CO] at equilibrium to A) Shift toward the products C) remain unchanged...
9. Which of the following would behave as a strong electrolyte in water? a ethanol, C H OH d acetic acid, CHCOOH e table salt, NaCI b. formaldehyde, CH-0 c. table sugar, CiH:20 10. Which of the following should have the highest conductivity? a. 3.0 M NaC b. 2.1 MNa PO c. 24 MCaC e3.2 MNHNO 11. If the molar concentration of sodium sulfate (Na SO.) is 0.10 M, what is the concentration of sodium ion? a 0.10 M d...
7. If H,PO, has K, -6.83 x 10, and Hco, has K,-5.8x 10", which is the weaker acid? Circle your answer and explain how you know. (Ipt 8. For a solution with pH 9.74, calculate the following: (3pa) [H'] [OH] pOH- 9. (2pas total) a. A solution of a weak acid with concentration 0.11 M. is 8.8 % ionized. Calculate its K, value. K, b. Calculate the K, value of a 0.060 M solution of a monoprotic acid with [H']...
3. (5 points) Is the system -21 +2r2 +6c3 31 -22-83 34-557 consistent? Which variables are free? Which variables are dependent? Solve the system. 4. (5 points) Find a value of k which will make the system x1 + x2- x3 = 1 21 2 + 23 3 inconsistent. Hint: Perform row reduction on the augmented matriz. What condition on k will force the last column to be a pivot column?