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An indicator has a PK a of 7.5 . What is the ratio of the concentration of base form to the concentration of acid form, in a buffer solution in which pH is 6.5?

An indicator has a PKa of 7.5 . What is the ratio of the concentration of base form to the concentration of acid form, in a buffer solution in which pH is 6.5?

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Grade:12

1 Answers

Aman
44 Points
3 years ago
For this question use formula 
pH= pka + log salt/acid
6.5 = 7.5 + log salt/ acid
log salt/ acid = -1
Salt/ acid = 10^-1

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