Redox/orp electrode user guide, 2mno, O2 sodium bromate (nabro – Thermo Products REDOX/ORP 9678BNWP User Manual
Page 15: Br¯ + 3as, O3 potassium permanganate (kmno, O5 sodium iodide (nai) in acid solution cl, 2i¯ –› i, 2cl¯, in basic solution 2clo¯ + 2i¯ –› i, 2cl¯ + 2oh¯ 1 sodium iodate ( naio, 5hcn + h
Redox/ORP Electrode User Guide
Suitable Titrants
Titration Reaction
Ref
potassium permanganate
(KMnO
4
)
5Sb
+3
+ 2MnO
4
¯ + 16H
+
–›
5Sb
+3
+ 2Mn
+2
+ 8H
2
O
2
sodium bromate (NaBrO
3
) BrO
3
¯ + 3As
+3
+ 6H
+
–›
Br¯ + 3As
+5
+ 3H
2
O
3
potassium permanganate
(KMnO
4
)
5H
2
O
2
+ 2MnO
4
¯ + 6H
+
–›
5O
2
+ 2Mn
+2
+ 8H
2
O
5
sodium iodide (NaI)
in acid solution Cl
2
+2I¯ –› I
2
+
2Cl¯, In basic solution
2ClO¯ + 2I¯ –› I
2
+ 2Cl¯ + 2OH¯
1
sodium iodate ( NaIO
3
)
2I
2
+ IO
3
¯ + 5HCN + H
+
–›
5ICN + 3H
2
O
4
sodium thiosulfate
(Na
2
S
2
O
3
)
I
2
+ 2S
2
O
3
-2
–› 2I¯ + S
4
O
6
-2
3
ceric sulfate [Ce(SO
4
)
2
]
(not recommended for
samples containing Cl¯)
Fe
+2
+ Ce
+4
–› Ce
+3
+ Fe
+3
2
potassium dichromate
(K
2
Cr
3
O
7
), recommended
for samples containing Cl¯
Cr
2
O
7
-2
+ 6Fe
+2
+ 14H
+
–›
2Cr
+3
+ 6Fe
+3
+ 7H
2
O
3
ferrous sulfate (FeSO
4
)
MnO
4
¯ + 5Fe
+2
+ 8H
+
–›
Mn
+2
+ 5Fe
+3
+ 4H
2
O
2
potassium permanganate
(KMnO
4
)
3Mn
+2
+ 2MnO
4
¯ + 7H
2
O –›
5MnO
3
+ H
2
O + 4H
+
1
ceric sulfate [Ce(SO
4
)
2
]
Sn
+2
+ 2Ce
+4
–› Sn
+4
+ 2Ce
+3
4
iodine (I
2
)
SO
2
+ I
2
+ 2H
2
O –›
SO
4
-2
+ 2I
¯
+ 4H
+
1
sodium bromate (NaBrO
3
) BrO
3
¯ + 3Ti
+
6H
+
–›
Br¯ + Ti
+3
+ 3H
2
O
3
Iodine (I
2
)
I
2
+ 2S
2
O
3
-2
–› 2I¯ + S
4
O
6
3
potassium dichromate
(K
2
Cr
2
O
7
)
3UO
+2
+ Cr
2
O
7
-2
+ 8H
+
–›
3UO
2
+2
+ 2Cr
+3
+ 4H
2
O
3
sodium iodate (NaIO
3
)
ZnHg(SCN)
4
+ 6IO
3
¯ + 6Cl¯ +
8H
+
–› Zn
+2
+ Hg
+2
+ 6ICl +
4HCN + 4SO
4
-2
2