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15 Nov 2021
Problem 100
Page 690
Section: Cumulative Problems
Chapter 16: Aqueous Ionic Equilibrium
Textbook ExpertVerified Tutor
15 Nov 2021
Given information
The buffer solution is prepared by mixing is in hydroxylamine with a significant amount of sodium formate.
The pH of the buffer is .
Step-by-step explanation
Step 1.
A buffer solution is made up of a certain amount of weak acid and its conjugate base, or a certain amount of weak acid and its conjugate base.
When you add a buffer solution to an acid, the conjugate base in the buffer neutralizes it, and when you add a buffer solution to a base, the weak acid neutralizes it.
The moles of components are given by the formula:
Moles of component Molarity Volume of solution
To the preceding expression, substitute the specified molarity and volume of solution values:
The value of for the formic acid is .
Let be the amount of sodium formate added to formic acid.
The Henderson Hasselbalch equation is given by the formula:
To the preceding expression, substitute the computed and provided value:
The molar mass of sodium formate is .
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