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An acid-base indicator has a K(a) = 3.0 ...

An acid-base indicator has a `K_(a) = 3.0 xx 10^(-5)`. The acid form of the indicator is red and the basic form is blue. Then

A

pH is 4.05 when indicator is 75% red

B

pH is 5.00 when indicator is 75% blue

C

Both 1 and 2 are correct

D

None of these

Text Solution

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The correct Answer is:
C
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