2-56. The fluids within cells are buffered by H2PO4¯ and HPO4²¯.2-a. Calculate the ratio of HPO² to H₂PO required tomaintain a pH of 7.1 within a cell.b. Could a buffer system employing H3PO4 as the weak acid andH2PO4 as the weak base be used as a buffer system withincells? Explain.

Answered: Image /qna-images/answer/7d801213-fc86-4228-a65a-a1eb08e71cf0.jpg

Answered: 2- 56. The fluids within cells are…

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...

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The Ka for a weak acid is 1.2*10^-8. a. What is the equilibrium concentration of OH- in a 0.0020 M solution of the conjugate base? b. What is the equilibrium concentration of the undissociated conjugate base in a 0.0020 M solution of the conjugate base? c. What is the equilibrium pH of a 0.0020 M solution of the conjugate base?
Q6
Which is true about buffer solutions? -they hold the pH close to the pKa -they contain comparable moles of a weak acid and a strong base - they hold pH constant at pH=7 -they prevent acids and bases from reaching equilibrium -they hold the pH close to the equivalence point pH
18. A. Calculate [OH−] for this strong base solution: 7.3×10−2 M KOH and then it's pH B. Calculate [OH−] for this strong base solution: 10.0 mL of 1.00×10−2 M Ca(OH)2 diluted to 500.0 mL and it's pH C. Calculate [OH−] for the strong base solution formed by mixing 10.0 mL of 1.50×10−2 M Ba(OH)2 with 34.0 mL of 6.0×10−3 M NaOH and it's pH
The following pictures represent aqueous solutions of three acids HX, HY and HZ, where: A¯ may be X¯, Y¯, or Z- in each picture. Water molecules have been omitted for clarity. 9-HA-H₂O* =A- HX HY HZ 25. Which, if any, is a weakest acid? O None are weak acids. O HY O HX O HZ
Calculate the pH of a solution that is 0.70 M in HF ( Ka= 7.2 × 104) and 0.66 M in NaF. а. 3.40 O b.0.12 О с. 3.26 O d. 10.74 О е. 3.12

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2- 56. The fluids within cells are buffered by H2PO4¯ and HPO4²¯. 2- a. Calculate the ratio of HPO² to H₂PO required to maintain a pH of 7.1 within a cell. b. Could a buffer system employing H3PO4 as the weak acid and H2PO4 as the weak base be used as a buffer system within cells? Explain.