Question:
The titration curve of weak acid vs. strong base with phenolphthalein as indictor is shown below. The Kphenolphthalein = 4 × 10-10 .
Given: log2 = 0.3
The number of following statements which is/are correct about phenolphthalein is______
A. It can be used as an indicator for the titration of weak acid with weak base.
B. It begins to change colour at pH = 8.4
C. It is a weak organic base
D. It is colourless in acidic medium.
The titration curve of weak acid vs. strong base with phenolphthalein as indictor is shown below. The Kphenolphthalein = 4 × 10-10 .
Given: log2 = 0.3
The number of following statements which is/are correct about phenolphthalein is______
A. It can be used as an indicator for the titration of weak acid with weak base.
B. It begins to change colour at pH = 8.4
C. It is a weak organic base
D. It is colourless in acidic medium.
Given: log2 = 0.3
The number of following statements which is/are correct about phenolphthalein is______
A. It can be used as an indicator for the titration of weak acid with weak base.
B. It begins to change colour at pH = 8.4
C. It is a weak organic base
D. It is colourless in acidic medium.
Updated On: Apr 23, 2024
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Correct Answer: 2
Solution and Explanation
The correct answer is: 2
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