Page 34 - PC 101 Interactive practical book
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MANSOURA NATIONAL UNIVERSIY
PHARM D- CLINICAL PHARMACY LEVEL I PHARM. ANAL. CHEM. I (PC 101)
For NH 4Cl :
4 NH 4Cl + 6 HCHO (CH 2) 6N 4 + 4 HCl + 6 H 20
4 HCl + 4 NaOH 4 NaCl + 4 H 2O
4 NH 4Cl ≡ 4 HCl ≡ 4 NaOH
1 NaOH ≡ 1 NH 4Cl
standard sample
# Note that formalin (HCHO) is not standard
Equivalence factor (F):
1 x M.W. of NH 4Cl x 0.1
each ml of 0.1 N NaOH ≡ ≡ .......... g NH 4Cl
1 x 1000
Concentration:
(E.P total - E.P HCl) x F x 1000
Concn. of NH 4Cl = = .......... g/L
10
Results:
E.P HCl =
E.P total =
Concn. of HCl =
Concn. of NH 4Cl =
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