4. Formic acid, HFor, has a K value of 1.8 x 10-4. You need to prepare 150 mL of a buffer hav-ing a pH of 3.25 from 0.10 M HFor solution and a 0.10 M NaFor solution. How many mLof NaFor and HFor should be mixed to make the desired buffer?ch ofmL NaFored on the fol ne mL HFOhydrogen ion concen1.205. When five drops of 0.10M NAOH were added to 20 mL of the buffer in question 4, the pHwent from 3.25 to 3.31. Write a net ionic equation to explain why the pH did not go up morethan this.teted with the ind stors osed fa this exeriment colors

Given pH of buffer = 3.25 Volume of buffer = 150 ml = 0.15 L ( 1L = 1000ml) Molarity of HCOOH = 0.1M…

4. Formic acid, HFor, has a K value of 1.8 x 10-4. You need to prepare 150 mL of a buffer hav- ing a pH of 3.25 from 0.10 M HFor solution and a 0.10 M NaFor solution. How many mL of NaFor and HFor should be mixed to make the desired buffer? ch of mL NaFor nd on the lo ns mL HFO hydrogen concen

4. Formic acid, HFor, has a K value of 1.8 x 10-4. You need to prepare 150 mL of a buffer hav- ing a pH of 3.25 from 0.10 M HFor solution and a 0.10 M NaFor solution. How many mL of NaFor and HFor should be mixed to make the desired buffer? ch of mL NaFor nd on the lo ns mL HFO hydrogen concen

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter15: Additional Aqueous Equilibria

Section: Chapter Questions

Problem 93QRT: When 40.00 mL of a weak monoprotic acid solution is titrated with 0.100-M NaOH, the equivalence...

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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

4. Formic acid, HFor, has a K value of 1.8 x 10-4. You need to prepare 150 mL of a buffer hav-
ing a pH of 3.25 from 0.10 M HFor solution and a 0.10 M NaFor solution. How many mL
of NaFor and HFor should be mixed to make the desired buffer?
ch of
mL NaFor
ed on the fol ne mL HFO
hydrogen ion concen
1.20
5. When five drops of 0.10M NAOH were added to 20 mL of the buffer in question 4, the pH
went from 3.25 to 3.31. Write a net ionic equation to explain why the pH did not go up more
than this.
teted with the ind stors osed fa this exeriment colors

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