Question 15 Consider an indicator for which K - 1.0 x 10, and that ionizes as follows: Hlo(aq) + H2O) H₂0+(aq) +In¯(aq) 12 Yellow Which of the following statements is true? (i) The predominant. colour in acid solution is yellow. Red (ii) In the middle of the pH range of its colour change, a solution containing the indicator will probably be orange. (iii) At pH 8, most of the indicator is present in the un-ionised form. (iv) The indicator changes colour at a pll of 4. (y) The indicator can be used for the titration of a strong acid with a strong base. A (i), (iii), (v) C (ii), (iv), (v) E (i), (ii), (iii), (v) B (i), (ii), (iv) D (i), (iv), (v) F (i), (ii), (v) 3

Question 15 Consider an indicator for which K - 1.0 x 10, and that ionizes as follows: Hlo(aq) + H2O) H₂0+(aq) +In¯(aq) 12 Yellow Which of the following statements is true? (i) The predominant. colour in acid solution is yellow. Red (ii) In the middle of the pH range of its colour change, a solution containing the indicator will probably be orange. (iii) At pH 8, most of the indicator is present in the un-ionised form. (iv) The indicator changes colour at a pll of 4. (y) The indicator can be used for the titration of a strong acid with a strong base. A (i), (iii), (v) C (ii), (iv), (v) E (i), (ii), (iii), (v) B (i), (ii), (iv) D (i), (iv), (v) F (i), (ii), (v) 3

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter15: Acid–base Equilibria

Section: Chapter Questions

Problem 99AP

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