The pH of a 100 mL water sample is found to be 6.3. It is titrated with 4.5mL of 0.02 N NaOH to a pH of 8.3. (the phenolphthalein endpoint). Calculate the acidity as mg/L CACO3. Use the same equation as for alkalinity.

The pH of a 100 mL water sample is found to be 6.3. It is titrated with 4.5mL of 0.02 N NaOH to a pH of 8.3. (the phenolphthalein endpoint). Calculate the acidity as mg/L CACO3. Use the same equation as for alkalinity.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter14: Principles Of Neutralization Titrations

Section: Chapter Questions

Problem 14.38QAP

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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.

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The pH of a 100 mL water sample is found to be
6.3. It is titrated with 4.5mL of 0.02 N NaOH to a
pH of 8.3. (the phenolphthalein endpoint).
Calculate the acidity as mg/L CACO3. Use the same
equation as for alkalinity.

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