30. Indicate the FALSE statement about pH indicators and their use in titrations: A) A pH indicator suitable for titrations of strong bases with strong acids cannot be used for titrations of strong acids with strong bases. B) pH indicators should be used sparingly (in small amounts) as they are weak acids/ bases, and thus could affect the volume of titrant used. C) An indicator should be selected such that its pkice value matches the equivalence point pH. D) pH indicators all contain at least one acidic group that can be deprotonated to form a differently colored conjugate base. E) The colours of the acid and base forms of a given pH indicator depend on their chemical structures.

30. Indicate the FALSE statement about pH indicators and their use in titrations: A) A pH indicator suitable for titrations of strong bases with strong acids cannot be used for titrations of strong acids with strong bases. B) pH indicators should be used sparingly (in small amounts) as they are weak acids/ bases, and thus could affect the volume of titrant used. C) An indicator should be selected such that its pkice value matches the equivalence point pH. D) pH indicators all contain at least one acidic group that can be deprotonated to form a differently colored conjugate base. E) The colours of the acid and base forms of a given pH indicator depend on their chemical structures.

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 111QRT: Consider the nanoscale-level representations for Question 111 of the titration of the aqueous strong...

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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

30. Indicate the FALSE statement about pH indicators and their use in titrations:
A) A pH indicator suitable for titrations of strong bases with strong acids cannot be
used for titrations of strong acids with strong bases.
B)
pH indicators should be used sparingly (in small amounts) as they are weak acids/
bases, and thus could affect the volume of titrant used.
C)
An indicator should be selected such that its pKits value matches the equivalence
point pH.
D)
pH indicators all contain at least one acidic group that can be deprotonated to form
a differently colored conjugate base.
E)
The colours of the acid and base forms of a given pH indicator depend on their
chemical structures.

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