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chemistry AP

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methyl red has the following color changes red 4.2 -8.3 yellow
a)write the ionic equilibrium equation
b) If a small quantity of methyl red is placed in a solution with a pH of 4.5 . calculate the approximate value of [In]/[HIn]. What colour would be observed on the basis of the colors of HIn and In
c) Predict the color change of the following indicators over the entire pH range from 0 to 14
Bromocresolpurple, cresol red , thymol blue

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