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You want to make 250 mL of a 0.10 M HA buffer with a pH of 5.00 using 1 M HA and and 1 M NaOH. What volume (in mL) of NaOH is required to make the buffer? The pKa of HA is 5.75.

Chemical Principles in the Laboratory

11th Edition

ISBN:9781305264434

Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Chapter25: Ph Measurements-buffers And Their Properties

Section: Chapter Questions

Problem 5ASA

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Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

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You want to make 250 mL of a 0.10 M HA buffer with a pH of 5.00 using 1 M HA and and 1 M NaOH. What volume (in mL) of NaOH is
required to make the buffer? The pKa of HA is 5.75.

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Acetic acid and its conjugate base acetate can form an acid-base buffer. The pKa of acetic acid is 4.75. How much 10.0 M HNO3 must be added to 1.00 L of a buffer that is 0.0100 M acetic acid and 0.100 M sodium acetate to reduce the pH to 4.90 ? Answer in mL
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