Welcome to Chem Zipper.com......: The pH range of a basic indicator is 4 to 6.5 Calculate the dissociation constant of indicator?.

Welcome to Chem Zipper.com......: The pH range of a basic indicator is 4 to 6.5 Calculate the dissociation constant of indicator?.

Saturday, September 26, 2020

The pH range of a basic indicator is 4 to 6.5 Calculate the dissociation constant of indicator?.

SOLUTION: pK_Inmust be midpoint of pH range for acidic indicators and pOH range for basic indicators

The pH range = 4 to 6.5 so pOH range is 10 to 7.5

Hence Pk_In= (10+7.5) /2 = 8.75

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