The indicator methyl red has a pK HIn = 4.95. It changes from red to yellow over

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The indicator methyl red has a pK_HIn = 4.95. It changes from red to yellow over the pH range from 4.4 to 6.2.

(a) If the indicator is placed in a buffer solution of pH = 4.55, what percent of the indicator will be present in the acid form, HIn, and what percent will be present in the base or anion form, In^-?

(b) Which form of the indicator has the “stronger” (that is, more visible) color—the acid (red) form or base (yellow) form? Explain.

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General Chemistry Principles And Modern Applications

ISBN: 9780132931281

11th Edition

Authors: Ralph Petrucci, Jeffry Madura, F. Herring, Carey Bissonnette

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Question Posted: Nov 23, 2023 06:19 AM

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The indicator methyl red has a pK HIn = 4.95. It changes from red to yellow over

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General Chemistry Principles And Modern Applications

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