Which of the following best describes an equilibrated 0.20 M aqueous solution of lactic acid (pKa = 3.08) at an adjusted pH of 3.08? A) 0.20 M lactic acidB) 0.20 M lactateC) 0.10 M lactic acid and 0.10 MlactateD) 0.15 M lactic acid and 0.05 MlactateE) 0.05 M lactic acid and 0.05 Mlactate

When there is a buffer solution of weak acid and its salt with equal concentrations of acid and…

Answered: A) 0.20 M lactic acid B) 0.20 M lactate…

A) 0.20 M lactic acid B) 0.20 M lactate C) 0.10 M lactic acid and 0.10 M lactate D) 0.15 M lactic acid and 0.05 M lactate

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter15: Complex Acid/base Systems

Section: Chapter Questions

Problem 15.16QAP

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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

Which of the following best describes an equilibrated 0.20 M aqueous solution of lactic acid (pKa = 3.08) at an adjusted pH of 3.08?

A) 0.20 M lactic acid
B) 0.20 M lactate
C) 0.10 M lactic acid and 0.10 M
lactate
D) 0.15 M lactic acid and 0.05 M
lactate
E) 0.05 M lactic acid and 0.05 M
lactate

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