Page 37 - PC 101 practical notes 24-25..
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MANSOURA NATIONAL UNIVERSIY
PHARM D- CLINICAL PHARMACY LEVEL I PHARM. ANAL. CHEM. I (PC 101)
How to predict the shape of the titration curve?
End of the curve
pH of If higher predicted from
the titrated concn. pH of the titrant
solution
If lower
concn.
Middle of the curve
predicted from
pH of the products
(= pH at equivalence point)
Start of the curve
predicted from mls added
pH of the sample of the titrant
• The pH-range of the indicator:
It is the pH-range ( pH-interval ) within which the indicator changes its
color.
Ex.: - The pH-range of M.O. ≈ (3 – 4.5) approximately.
- The pH-range of ph.ph. ≈ (8.5 – 10) approximately.
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