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Quantitative Chemical Analysis | 8th Edition | ISBN: 9781429218153 | Authors: Daniel C. Harris
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How many milliliters of 0.246 M HNO3 should be added to 213 mL of 0.006 66 M

Chapter 8, Problem 8-38

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QUESTION:

How many milliliters of 0.246 M HNO3 should be added to 213 mL of 0.006 66 M 2,2-bipyridine to give a pH of 4.19?

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QUESTION:

How many milliliters of 0.246 M HNO3 should be added to 213 mL of 0.006 66 M 2,2-bipyridine to give a pH of 4.19?

ANSWER:

Step 1 of 3

Henderson-Hasselbalch equation

Henderson-Hasselbalch equation is used to determine the pH of a chemical or biological system as a measure of its acidity. It is used generally to calculate the buffer solution concentration required to maintain the optimum pH.

The equation is derived from the acid dissociation constant expression and is used to find the isoelectric point of proteins in biological systems.

Henderson-Hasselbalch equation is also used to find the pH of the solution during neutralization titrations. The pH at the equivalent point of titration will be equal to the  value of the acid.

 

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