Which statement about acid-base indicators is not correct? * A- A weak acid can be used as an acid-base indicator provided that the chemical structures of the weak acid and its conjugate base differ slightly. B- The end point of the titration is not a specific colour but the point where one drop of acid or base from the burette changes the colour of the solution in the conical flask. C- Phenolphthalein can be used to detect the end point of the titration of a strong base with a weak acid. D- All these statements are correct. E- None of these statements are correct.
Which statement about acid-base indicators is not correct? * A- A weak acid can be used as an acid-base indicator provided that the chemical structures of the weak acid and its conjugate base differ slightly. B- The end point of the titration is not a specific colour but the point where one drop of acid or base from the burette changes the colour of the solution in the conical flask. C- Phenolphthalein can be used to detect the end point of the titration of a strong base with a weak acid. D- All these statements are correct. E- None of these statements are correct.
Chapter9: Acids, Bases, And Salts
Section: Chapter Questions
Problem 9.101E
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Question
Which statement about acid-base indicators is not correct? *
A- A weak acid can be used as an acid-base indicator provided that the chemical structures of the weak acid and its conjugate base differ slightly.
B- The end point of the titration is not a specific colour but the point where one drop of acid or base from the burette changes the colour of the solution in the conical flask.
C- Phenolphthalein can be used to detect the end point of the titration of a strong base with a weak acid.
D- All these statements are correct.
E- None of these statements are correct.
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