A Certain Indicator HIn Has a PK_a of 9

question 98

Multiple Choice

A certain indicator HIn has a pK_a of 9.00, and a color change becomes visible when 7.00% of it is In^-. At what pH is this color change visible?

• A) 6.15
• B) 7.88
• C) 10.2
• D) 3.85
• E) none of these

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