Which indicator would be the best to use if 0.050 M benzoic acid (Ka = 6.6 × 10-5) is titrated with 0.050 M NaOH?
A) bromphenol blue, pH range: 3.0 - 4.5
B) bromcresol green, pH range: 3.8 - 5.4
C) alizarin, pH range: 5.7 - 7.2
D) phenol red, pH range: 6.9 - 8.5
Correct Answer:
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