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
Correct Answer:

Verified
Correct Answer:
Verified
Q15: How many moles of HCl(g) must be
Q50: A 100.-mL sample of 0.10 M HCl
Q53: Sodium chloride is added slowly to a
Q54: A 200.0-mL sample of the weak acid
Q57: Calculate the solubility of Ag<sub>2</sub>CrO<sub>4</sub> [K<sub>sp</sub> =
Q58: The K<sub>sp</sub> for Mn(OH)<sub>2</sub> is 2.0 <font
Q59: A student uses 16.60 mL of 0.100
Q59: A 50.0-mL solution of the acid H<sub>3</sub>A
Q60: The Ag<sup>+</sup> ion reacts with NH<sub>3</sub> to
Q135: Consider the following information about the diprotic