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Buffer preparation: A 6.90 g sample of sodium nitrite (NaNO2, 68.995) was dissolved in about 100. mL of water. To this was added 500. mL of 0.200 M nitrous acid (HNO2, pKa = 3.34) and the total volume was brought to 1.00 L by adding distilled water. (hint: calculate the molarites in this buffer solution first) Addition of acid to buffer: To 100.0 mL of this resulting buffer solution was added 1.00 mL of 5.29 M HBr (aq). The pH of the buffer + HBr solution is

Buffer preparation: A 6.90 g sample of sodium nitrite (NaNO2, 68.995) was dissolved in about 100. mL of water. To this was added 500. mL of 0.200 M nitrous acid (HNO2, pKa = 3.34) and the total volume was brought to 1.00 L by adding distilled water. (hint: calculate the molarites in this buffer solution first) Addition of acid to buffer: To 100.0 mL of this resulting buffer solution was added 1.00 mL of 5.29 M HBr (aq). The pH of the buffer + HBr solution is

Chemistry & Chemical Reactivity
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 89GQ: A buffer solution is prepared by dissolving 1.50 g each of benzoic acid, C6H5CO2H, and sodium...
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Buffer preparation: A 6.90 g sample of sodium nitrite (NaNO2, 68.995) was dissolved in about 100. mL of water. To this was added 500. mL of 0.200 M nitrous acid (HNO2, pka = 3.34) and the total volume was brought to 1.00 L by adding distilled water. (hint: calculate the molarites in this buffer solution first) Addition of acid to buffer: To 100.0 mL of this resulting buffer solution was added 1.00 mL of 5.29 M HBr (aq). The pH of the buffer + HBr solution is
Transcribed Image Text:Buffer preparation: A 6.90 g sample of sodium nitrite (NaNO2, 68.995) was dissolved in about 100. mL of water. To this was added 500. mL of 0.200 M nitrous acid (HNO2, pka = 3.34) and the total volume was brought to 1.00 L by adding distilled water. (hint: calculate the molarites in this buffer solution first) Addition of acid to buffer: To 100.0 mL of this resulting buffer solution was added 1.00 mL of 5.29 M HBr (aq). The pH of the buffer + HBr solution is
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