Answered: How many moles of potassium hydroxide…

How many moles of potassium hydroxide would have to be added to 250 mL of a 0.417 M acetic acid solution, in order to prepare a buffer with a pH of 4.600? 0.066 moles

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter14: Acid- Base Equilibria

Section: Chapter Questions

Problem 3ALQ

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Concept explainers

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

How many moles of potassium hydroxide would have to be added to 250 mL of a 0.417 M acetic acid solution, in order to
prepare a buffer with a pH of 4.600?
0.066
moles

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What mass of NH4Cl must be added to 0.750 L of a 0.100-M solution of NH3 to give a buffer solution with a pH of 9.26? (Him: Assume a negligible change in volume as the solid is added.)
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