A certain acid-base indicator is red in acid solution and blue in basic solution 75% of the indicator is prE3sent in the

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Q 2612578439.     A certain acid-base indicator is red in acid solution and blue in basic solution 75% of the indicator is prE3sent in the solution in its blue form at pH = 5. Calculate the pH at which the indicator sh'pws 90% red ¬∑form?
A

3.56

B

5.47

C

2.5

D

7.4

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Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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