Two drops of indicator HIn (left(K_{mathrm{a}}=1.0 times 10^{-9}ight)), where HIn is yellow and (mathrm{In}^{-})is blue, are placed

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Two drops of indicator HIn \(\left(K_{\mathrm{a}}=1.0 \times 10^{-9}ight)\), where HIn is yellow and \(\mathrm{In}^{-}\)is blue, are placed in \(100.0 \mathrm{~mL}\) of \(0.10 \mathrm{M} \mathrm{HCl}\).


a. What color is the solution initially?
b. The solution is titrated with \(0.10 \mathrm{M} \mathrm{NaOH}\). At what \(\mathrm{pH}\) will the color change (yellow to greenish yellow) occur?
c. What color will the solution be after \(200.0 \mathrm{~mL}\) of \(\mathrm{NaOH}\) has been added?

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Chemical Principles

ISBN: 9780618946907

6th Edition

Authors: Steven S Zumdahl

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