Which of the Following Indicators Would Be the Best to Use

question 100

Multiple Choice

Which of the following indicators would be the best to use when 0.050 M benzoic acid (K_a = 6.6 × 10⁻⁵) is titrated with 0.05 MNaOH?

• 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: 6.9-8.2
• E)Phenolphthalein, pH range: 8.0-10.1

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