The titration curve of weak acid vs. strong base with phenolphthalein as indictor) is shown below. The {\K}_{\text{phenolphthalein }}=4 \times 10^{-10} Given : \log 2=0.3 The number of following statements/s which is/are correct about phenolphthalein is ________ [8-Apr-2023 shift 1]

Correct Answer is : It begins to change colour at pH=8.4

It can be used as an indicator for the titration of weak acid with weak base.

It begins to change colour at {\pH}=8.4

It is colourless in acidic medium

Ionic Equilibrium Part 1

Section: Chemistry

Question : 3 of 100

Marks: +1, -0

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/s which is/are correct about phenolphthalein is ________

[8-Apr-2023 shift 1]

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