Page 20 - 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)
Exp.: Determination of HCl sample
a) Preparation of 0.1 N NaOH & standardization of it.
b) Titration:
1- Transfer 10 ml of HCl sample into a clean conical flask (by bulb pipette).
2- Add 10 drops ph.ph. indicator.
3- Titrate ≠ 0.1 N NaOH (in burette).
Color change at E.P.:
from Colorless to first pink persistent for 30 sec.
c) Calculations: will be discussed later.
Repeat the experiment on another 10 ml sample
using 2 drops M.O. indicator.
Color change at E.P.:
from Red to Orange
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