How many moles of potassium hydroxide would have to be addedto 250 mL of a 0.385 M hydrocyanic acid solution, in order toprepare a buffer with a pH of 9.360?moles An aqueous solution contains 0.423 M nitrous acid.How many mL of 0.225 M sodium hydroxide would have to beadded to 150 mL of this solution in order to prepare a buffer with apH of 2.950?||mL

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How many moles of potassium hydroxide would have to be added to 250 mL of a 0.385 M hydrocyanic acid solution, in order to prepare a buffer with a pH of 9.360? moles

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

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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 0.385 M hydrocyanic acid solution, in order to
prepare a buffer with a pH of 9.360?
moles

An aqueous solution contains 0.423 M nitrous acid.
How many mL of 0.225 M sodium hydroxide would have to be
added to 150 mL of this solution in order to prepare a buffer with a
pH of 2.950?
||
mL

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