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0.10- Formic acid, HFor, has a Kvalue of 1.8 x 10-4. You need to prepare 150 mL of a buffer hav- ing a pH of 3.25 from 0.10 M HFor solution and a 0.10 M NaFor solution. How many mL of NaFor and HFor should be mixed to make the desired buffer? -4 -

0.10- Formic acid, HFor, has a Kvalue of 1.8 x 10-4. You need to prepare 150 mL of a buffer hav- ing a pH of 3.25 from 0.10 M HFor solution and a 0.10 M NaFor solution. How many mL of NaFor and HFor should be mixed to make the desired buffer? -4 -

Chemistry
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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201×の-91X カbム CN-] xHF] [NOH 66.304 x10-6 %3D メx7 %3D メ-01 4. Formic acid, HFor, has a K value of 1.8 × 10-4. You need to prepare 150 mL of a buffer hav- ing a pH of 3.25 from 0.10 M HFor solution and a 0.10 M NaFor solution. How many mL of NaFor and HFor should be mixed to make the desired buffer? mL HFO. mL NaFor LsatE] (NaFor] CHFOR] 5. When five drops of 0.10 M NaOH were added to 20 mL of the buffer in question 4, the pH went from 3.25 to 3.31. Write a net ionic equation to explain why the pH did not go up more than this.
Transcribed Image Text:201×の-91X カbム CN-] xHF] [NOH 66.304 x10-6 %3D メx7 %3D メ-01 4. Formic acid, HFor, has a K value of 1.8 × 10-4. You need to prepare 150 mL of a buffer hav- ing a pH of 3.25 from 0.10 M HFor solution and a 0.10 M NaFor solution. How many mL of NaFor and HFor should be mixed to make the desired buffer? mL HFO. mL NaFor LsatE] (NaFor] CHFOR] 5. When five drops of 0.10 M NaOH were added to 20 mL of the buffer in question 4, the pH went from 3.25 to 3.31. Write a net ionic equation to explain why the pH did not go up more than this.
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