Determine the differences in pH when a strong base is used to titrate a strong acid and a weak acid. Consider the following reactions: HC1 + NaOH, (aq) → NaCl (aq) + H2O (1 (ад) HC;H;O2 (ag) + NaOH (ag) → NaC:H;O2 (a) + H2O (1) Experiment 1: 0.2773 M NaOH is used to titrate 10.00 mL of 0.7198 M HC1 Experiment 2: 0.2773 M NaOH is used to titrate 10.00 mL of 0.7198 M HC:H;O2 (K. = 1.75 x 10) Because the volumes and concentrations are the same for both titrations, the volume of titrant required to reach the equivalence point is also the same: 25.96 mL of NaOH. Calculate the following: 1. The pH of both acids before any base has been added (initial pH). 2. The pH at the equivalence point for the HC,H;O2 + NaOH titration. 3. The pH when 25.00 mL has been added in the HCl + NaOH titration 4. The pH when 8.00 mL has been added in the HC.H;O2 + NaOH titration,

Determine the differences in pH when a strong base is used to titrate a strong acid and a weak acid. Consider the following reactions: HC1 + NaOH, (aq) → NaCl (aq) + H2O (1 (ад) HC;H;O2 (ag) + NaOH (ag) → NaC:H;O2 (a) + H2O (1) Experiment 1: 0.2773 M NaOH is used to titrate 10.00 mL of 0.7198 M HC1 Experiment 2: 0.2773 M NaOH is used to titrate 10.00 mL of 0.7198 M HC:H;O2 (K. = 1.75 x 10) Because the volumes and concentrations are the same for both titrations, the volume of titrant required to reach the equivalence point is also the same: 25.96 mL of NaOH. Calculate the following: 1. The pH of both acids before any base has been added (initial pH). 2. The pH at the equivalence point for the HC,H;O2 + NaOH titration. 3. The pH when 25.00 mL has been added in the HCl + NaOH titration 4. The pH when 8.00 mL has been added in the HC.H;O2 + NaOH titration,

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter16: Reactions Between Acids And Bases

Section: Chapter Questions

Problem 16.26QE

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