Which of the Following Indicators Would Be the Best to Use

question 102

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 M NaOH?

• A) bromphenol blue, pH range: 3.0 to 4.5
• B) bromcresol green, pH range: 3.8 to 5.4
• C) alizarin, pH range: 5.7 to 7.2
• D) phenol red, pH range: 6.9 to 8.2
• E) phenolphthalein, pH range: 8.0 to 10.1

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Very young offspring of humans, characterized by limited cognitive and physical abilities, requiring extensive care and nurturing.

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