12QUESTION 18H₂PO4 is an example of an amphoteric substance, one that can act as both acid and base. The Kb of H₂PO4 is the equilibrium constant of which of the following?O PO4 (aq) + H₂0 (1) <-> HPO42- (aq) + OH(aq)O H₂PO4 (aq) + H₂0 (1) <-> H3PO4 (aq) + OH (aq)OH3PO4 (aq) + H₂0 (1) <-> H₂PO4 (aq) + H30+ (aq)O H₂PO4 (aq) + H₂0 (1) <-> HPO42- (aq) + H30+ (aq)WQUESTION 19The equation pH + pOH = pkw is a shortcut to solve the equilibrium concentration of which reaction?O 2 H₂0 (1)<-> H30+ (aq) + OH(aq)OB(aq) + H₂0 (1) <-> BH* (aq) + OH (aq)Where B is a base and BH its conjugate acid.OH30 (aq) + OH (aq) <-> 2 H₂O (1)O HA (aq) + H₂0 (1) <--> A (aq) + H3O+ (aq)Where HA is an acid and A its conjugate base.QUESTION 20Click Save and Submit to save and submit. Click Save All Answers to save all answers.f3#3E14*$4Rf54%516TQ4A6f7Yliji&7f827U* 00fg84S8f10:(num Ik9W5-9NAININEfuO2O6

Answered: Image /qna-images/answer/67571b88-3ede-455d-a87a-ec1b54b49204.jpg

QUESTION 18 H₂PO4 is an example of an amphoteric substance, one that can act as both acid and base. The Kb of H₂PO4 is the equilibrium constant of which of the following? O PO4 (aq) + H₂0 (1) <-> HPO42- (aq) + OH (aq) O H₂PO4 (aq) + H₂0 (1) <-> H3PO4 (aq) + OH" (aq) OH3PO4 (aq) + H₂0 (1) <-> H₂PO4 (aq) + H30+ (aq) O H₂PO4 (aq) + H₂0 (1) <> HPO42- (aq) + H30+ (aq)

QUESTION 18 H₂PO4 is an example of an amphoteric substance, one that can act as both acid and base. The Kb of H₂PO4 is the equilibrium constant of which of the following? O PO4 (aq) + H₂0 (1) <-> HPO42- (aq) + OH (aq) O H₂PO4 (aq) + H₂0 (1) <-> H3PO4 (aq) + OH" (aq) OH3PO4 (aq) + H₂0 (1) <-> H₂PO4 (aq) + H30+ (aq) O H₂PO4 (aq) + H₂0 (1) <> HPO42- (aq) + H30+ (aq)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

QUESTION 15 Which of these neutralization reactions has a pH > 7 when equal moles of acid and base are mixed? HCI(aq) + LIOH(aq) = H20() + LICI(aq) O CH3CO2H(aq) + LIOH(aq) = H20() + LICH3CO2(aq) O H2SO4(aq) + 2 KOH(aq) 2 H20() + K2SO4(aq) HI(aq) + C5H5N(aq) C5H5NHI(aq) Click Save and Submit to save and submit. Click Save All Answers to save all answers. MacBook Air DD F7 F8 F9 F5 F6 F3 F4 F1 F2 23 3 4 5 6. Y. 00 00 00 %24 LL
Kw = [OH][H3O] Kw = [OH ][H3O+] Kw H₂O™] OH Kw = [H₂01² Jy YERALT
What is the pH of a grapefruit that contains 0.007 M citric acid solution (C6H8O7)? C6H8O7(aq) + H2O(ℓ) ⇌ C6H7O7−(aq) + H3O+(aq) Ka = 7.5 x 10-4 Round your answer to 2 decimal places.
What is the [H3O*] and pH of a 0.350 M HF solution? The Ka of HF is 3.5 X 10“. HF (aq) + H,O (1) = H;O* (aq)+F¨(aq)
Consider the reaction below. Which species is (are) the Brønsted-Lowry base(s)? HCO3(aq) + F (aq) = CO32 (aq) + HF (aq) A) F™, HF B) HCO3, F C) CO3², HF D) CO3², F
6. The pH of solution A1, solution A2, solution A3 and solution A4 are 1.0, 2.0, 3.0, and 4.0, respectively, which one is the strongest acid? The molarities of the 4 acid solutions are the same. O O (A) A2 (B) A4 (C) A1 (D) A3
6:15 Question 18 of 22 Construct the expression for Ka for the weak acid, HC,H,O4. Ka = HC,H,O,(aq) + H2O(l) = HgO*(aq) + C,H,O, (aq) 1 Based on the definition of Ka, drag the tiles into the numerator or denominator to construct the expression for the given acid. Submit [H₂O] [H3O+] [OH-] [H₂C9H₂O4*] [C₂H₂O4] 2[H₂O] 2[OH-] 2[HC₂H₂O4] 2[H₂C9H₂O4*] [H₂O]² [H3O+]² [OH-]² [H₂C9H₂O4*]² [C₂H₂O₂-]² Tap here or pull up for additional resources RESET [HC₂H₂O4] 2[H3O+] 2[C9H₂O4] [HC,H,O]
Label the Bronsted-Lowry acids and bases in the following equations, and tell which substances are conjugate acid-base pairs. Check all that apply. H,PO, (aq) + N2H (aq) =HPO; (aq) +N,H (aq) H,PO, (aq) base HPO? (aq) conjugate acid O HPO? (áq) conjugate base O N;H,(aq) acid O N,H, (aq) base O H,PO, (aq) acid O N,H, (aq) conjugate acid O N,H, (aq) conjugate base Submit Request Answer 80°F
Homework helppp
a Choose balanced equations showing how the HSO3 ion of sodium hydrogen sulfite, NaHSO3, can be a Brønsted acid. (Select all that apply.) HSO; (aq) + CIo (aq) 2 So,2 (aq) + HC1O(aq) HSO; (aq) + HNO3(aq) 2 H2SO3(aq) + NO3 (aq) HSO; (aq) + HCI(aq) 2 H2 SO3 (aq) + Cl (aq) HSO3 (aq) + OH (aq) 2 So32 (aq) + H20(€) O HSO3 (aq) + Na* (aq) 2 NAHSO3 (s)
14) What is the percent ionization of a 5.3 X 10 M HCN solution? The Ka of HCN is 4.9 X 10". HCN (aq) + H20 (1) H;O* (aq) + CN (aq)
Label the conjugate acid–base pairs in each equation.