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Part B For the best system, calculate the ratio of the masses of the buffer components required to make the buffer

Part B For the best system, calculate the ratio of the masses of the buffer components required to make the buffer

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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Part A Which butter system is the best choice to create a butter with pH = 7.107 HCIO₂/KCIO₂ HC₂H₂O₂/KC₂H₂O₂ NHI/NH CƯ • HCIO/KCIO Previous Answers ✓ Correct The effective range for a buffering system is one pH unit on either side of pK, Therefore, calculate the pK, for each buffer system. For HC₂H₂O₂/KC₂H₂O2. For HC10₂/KC1O₂, pK, 1.96 for HCIO/KCIO. pK,-7.54; and, for NH₂/NH4Cl pk₁- 14.00-pk 14.00 4.754 Part B m(KCIO) m(HCIO) So, HCIO/KCIO is the best choice to create a buffer with pH 7.10 because HCIO has the pk, value that is closest to 7.10. pk = -log K₁ --log(1.8 x 10-5 4.74 For the best system, calculate the ratio of the masses of the butter components required to make the buffer. Express your answer to two significant figures. VE ΑΣΦΑ .79 Submit Previous Answers Request Answer X Incorrect; Try Again; 7 attempts remaining -9.25 Review I Constants 1 Periodic Table ?
Transcribed Image Text:Part A Which butter system is the best choice to create a butter with pH = 7.107 HCIO₂/KCIO₂ HC₂H₂O₂/KC₂H₂O₂ NHI/NH CƯ • HCIO/KCIO Previous Answers ✓ Correct The effective range for a buffering system is one pH unit on either side of pK, Therefore, calculate the pK, for each buffer system. For HC₂H₂O₂/KC₂H₂O2. For HC10₂/KC1O₂, pK, 1.96 for HCIO/KCIO. pK,-7.54; and, for NH₂/NH4Cl pk₁- 14.00-pk 14.00 4.754 Part B m(KCIO) m(HCIO) So, HCIO/KCIO is the best choice to create a buffer with pH 7.10 because HCIO has the pk, value that is closest to 7.10. pk = -log K₁ --log(1.8 x 10-5 4.74 For the best system, calculate the ratio of the masses of the butter components required to make the buffer. Express your answer to two significant figures. VE ΑΣΦΑ .79 Submit Previous Answers Request Answer X Incorrect; Try Again; 7 attempts remaining -9.25 Review I Constants 1 Periodic Table ?
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