Question 13: Fill in the missing values to two decimal places A 10.0 mL sample of 0.10 M HCI is added to 100.0 mL of a buffer that is 0.25 M in formic acid (HCO2H, Ka= 1.8E-4) and 0.15 M in sodium formate, NaCO2H. The initial pH of the buffer solution is 3.52 × The pH after adding the HCI is 3.47 * The decrease in pH is 0.05 A 10.0 mL sample of 0.10 M KOH is added to 100.0 mL of a buffer that is 0.25 M in nitrous acid (HNO2, Ka = 4.6E-4) and 0.15 M in sodium nitrite, NaNO2. The initial pH of the buffer solution is 3.12 ✔ The pH after adding the KOH is 3.16 The increase in pH is 0.04
Question 13: Fill in the missing values to two decimal places A 10.0 mL sample of 0.10 M HCI is added to 100.0 mL of a buffer that is 0.25 M in formic acid (HCO2H, Ka= 1.8E-4) and 0.15 M in sodium formate, NaCO2H. The initial pH of the buffer solution is 3.52 × The pH after adding the HCI is 3.47 * The decrease in pH is 0.05 A 10.0 mL sample of 0.10 M KOH is added to 100.0 mL of a buffer that is 0.25 M in nitrous acid (HNO2, Ka = 4.6E-4) and 0.15 M in sodium nitrite, NaNO2. The initial pH of the buffer solution is 3.12 ✔ The pH after adding the KOH is 3.16 The increase in pH is 0.04
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter15: Additional Aqueous Equilibria
Section: Chapter Questions
Problem 28QRT: Calculate the pH change when 10.0 mL of 0.100-M NaOH is added to 90.0 mL pure water, and compare the...
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