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Chemistry

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The indicator bromocresol green (HIn) can be in two different forms: As HIn the color of the indicator is yellow, an In the color of the indicator is blue, and an equilmolar mixture of the two species is green. The Ka of the indicator is 2.5 x 10-5. What is the color of the indicator in a solution of pH= 3.8?

My blind guess would be HIn, yellow since that's an acid, but there may be more to the question that I'm not factoring in.

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