Calculate of the expected pH of the solution in beaker 3 after the addition of 20 mL of 1.0 M HCl. Beaker 3 volume: 100mL Beaker 3 (1.0M CH3CO2H & 1.0M NaCH3CO2) pH init: 4.73 Breaker 3 (1.0M CH3CO2H & 1.0M NaCH3CO2) pH final: 4.56
Calculate of the expected pH of the solution in beaker 3 after the addition of 20 mL of 1.0 M HCl. Beaker 3 volume: 100mL Beaker 3 (1.0M CH3CO2H & 1.0M NaCH3CO2) pH init: 4.73 Breaker 3 (1.0M CH3CO2H & 1.0M NaCH3CO2) pH final: 4.56
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 16.52QE
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Question
Calculate of the expected pH of the solution in beaker 3 after the addition of 20 mL of 1.0 M HCl.
Beaker 3 volume: 100mL
Beaker 3 (1.0M CH3CO2H & 1.0M NaCH3CO2) pH init: 4.73
Breaker 3 (1.0M CH3CO2H & 1.0M NaCH3CO2) pH final: 4.56
Expert Solution
Step 1
Step 1:
From the given condition, initial pH of beaker 3 is 4.73.
The volume is 100 ml=0.1L
Solutions in the beaker are: 1.0M CH3COOH and 1.0M CH3COONa.
The initial moles are, calculated as follows:
Thus, the Handerson Hasselbaach equation is applied as follows:
Now, putting the values it is obtained as:
Thus, the pKa is obtained is 4.73.
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