5) Find the concentration of H30*(aq) in a 1.75 M solution of lactic acid, HC3H5O3,at 25°C. Ka= 1.38 x 10*.6) Write the equilibrium expression for the ionization of HOI, and calculate theconcentration of HOI(aq) in solution if [H3O*]=2.3 x 10° M and pKa = 10.7 at25°C.

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5) Find the concentration of H3O*(aq) in a 1.75 M solution of lactic acid, HC3H5O3, at 25°C. Ka= 1.38 x 10“. %3D

Chemistry for Engineering Students

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ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter12: Chemical Equilibrium

Section: Chapter Questions

Problem 12.72PAE

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Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

5) Find the concentration of H30*(aq) in a 1.75 M solution of lactic acid, HC3H5O3,
at 25°C. Ka= 1.38 x 10*.
6) Write the equilibrium expression for the ionization of HOI, and calculate the
concentration of HOI(aq) in solution if [H3O*]=2.3 x 10° M and pKa = 10.7 at
25°C.

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