Answered: Phenolphthalein has a pKa of 9.7 and is…

Phenolphthalein has a pKa of 9.7 and is colorless in its acid form and pink in its basic form. For pH= 7.7 calculate [In−]/[HIn]. Express your answer using two significant figures.

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter8: Polyfunctional Acids And Bases

Section: Chapter Questions

Problem 1P

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Phenolphthalein has a pKa of 9.7 and is colorless in its acid form and pink in its basic form.

For pH= 7.7 calculate [In−]/[HIn].

Express your answer using two significant figures.

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