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In the Titration of a Weak Acid HA with 0

Question 150

Multiple Choice

In the titration of a weak acid HA with 0.100 M NaOH, the stoichiometric point is known to occur at a pH value of approximately 10. Which of the following indicator acids would be best to use to mark the endpoint of this titration?


A) indicator A, Ka = 10-14
B) indicator C, Ka = 10-8
C) indicator D, Ka = 10-6
D) indicator B, Ka = 10-11
E) none of these

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