Number 2 1) What is thei when pH=7.83?2) A weak acid has a K= 6.62 x 10-5. What is the pH of a solution of this acid that is 2.65 M?3) An undergraduate student is making 1.5 L of a 1.5 M potassium phosphate buffer solutionwith a pH = 6.1 (pKa of H2PO4 is 7.21) using 3 M KH2PO4 and 3 M K,HPO4. How many%3Dmilliliters of 3 M K;HPO, will be needed to make this solution?

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Answered: 2) A weak acid has a K,= 6.62 x 10.…

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2) A weak acid has a K,= 6.62 x 10. What is the pH of a solution of this acid that is 2.65 M?

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter17: Principles Of Chemical Reactivity: Other Aspects Of Aqueous Equilibria

Section: Chapter Questions

Problem 8PS: Lactic acid (CH3CHOHCO2H) is found in sour milk, in sauerkraut, and in muscles after activity. (Ka...

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Question

Number 2

1) What is thei when pH=7.83?
2) A weak acid has a K= 6.62 x 10-5. What is the pH of a solution of this acid that is 2.65 M?
3) An undergraduate student is making 1.5 L of a 1.5 M potassium phosphate buffer solution
with a pH = 6.1 (pKa of H2PO4 is 7.21) using 3 M KH2PO4 and 3 M K,HPO4. How many
%3D
milliliters of 3 M K;HPO, will be needed to make this solution?

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