rple dye derived from red cabbage serves as an lent acid-base indicator. As the pH of an aqueous ion containing this indicator is increased, the col ge orange purple →→→ green served. Upon adding olive oil to a wine red solutio- is dye the upper (oil) phase is observed to turn orar the lower phase turns purple. Which is the more nal model for the purple phase? H₂In (B) HIn (C) In²- (D) Hin

Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter14: Equilibria In Acid-base Solutions
Section: Chapter Questions
Problem 33QAP: A buffer is prepared in which the ratio [ H2PO4 ]/[ HPO42 ]is 3.0. (a) What is the pH of this...
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35. A purple dye derived from red cabbage serves as an
excellent acid-base indicator. As the pH of an aqueous
solution containing this indicator is increased, the color
change
orange
purple →→→ green
is observed. Upon adding olive oil to a wine red solution
of this dye the upper (oil) phase is observed to turn orange
and the lower phase turns purple. Which is the more
rational model for the purple phase?
(A) H₂In (B) HIn
(C) In²-
(D) Hin
Transcribed Image Text:35. A purple dye derived from red cabbage serves as an excellent acid-base indicator. As the pH of an aqueous solution containing this indicator is increased, the color change orange purple →→→ green is observed. Upon adding olive oil to a wine red solution of this dye the upper (oil) phase is observed to turn orange and the lower phase turns purple. Which is the more rational model for the purple phase? (A) H₂In (B) HIn (C) In²- (D) Hin
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