An acid-base indicator () has a . The acid form is red, and the basic form is blue. What is the pH change required to transition the color from 80% red to 80% blue?

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Question

An acid-base indicator ($HIn$) has a $K_a = 1.0 	imes 10^{-5}$. The acid form is red, and the basic form is blue. What is the pH change required to transition the color from 80% red to 80% blue?

Prashant Kotian · Accepted Answer

Correct answer: A. . At 80% red: . . At 80% blue: . . .

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