A sample of hydrochloric acid (approximately 0.10 M) is titrated with 0.0993 M NaOH. What indicator changes color closest to the equivalence point?
A) thymol blue (p K In = 1.65)
B) methyl orange (p K In = 3.46)
C) methyl red (p K In = 5.00)
D) bromthymol blue (p K In = 7.30)
E) phenolphthalein (p K In = 8.7)
Correct Answer:
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