ACT NO. 11: Assay of Hydrogen Peroxide Topical Solution Flashcards
1
Q
Reagents in Expt. 11
A
Hydrogen Peroxide , 2.5-3.5% 10 volumes
2N Sulfuric Acid
Std. 0.1N KMnO4 sol’n
2
Q
Titrant in Expt. 11
A
KMnO4
3
Q
Analyte in Expt. 11
A
H2O2 (Hydrogen Peroxide)
4
Q
Indicator in Expt. 11
A
KMnO4
5
Q
Endpoint in Expt. 11
A
Pink color
6
Q
KMnO4 + H2O2 + H2SO4 »_space;
A
MnSO4 + K2SO4 + O2 + H2O
7
Q
Amount of Analyte in Expt. 11
A
2mL of H2O2
8
Q
Molecular weight of analyte in Expt. 11
A
34 (H2O2)
9
Q
meq of analyte in Expt. 11
A
0.017
34/2×1000
10
Q
USP requirement of H2O2 per 100mL
A
NLT 2.5 and NMT 3.5g
11
Q
Direct Titration
A
H2O2
KBr
12
Q
Indirect Titration
A
Malic acid in Cherry juice
Titanium dioxide (TiO2)
Manganese dioxide (MnO2)
